My Big Bang Hero build

Some things to note. Balrog limits 3rd/4th job skills, so you may want to consider maxing Power Strike and Fundamentals. I'm personally not getting Ground Smash since it's much like Heroes/Paladins now. Blast beats Brandish on 1v1 targets and ACB beats Brandish on mobs of 4+, but with mobs of 2 or 3, Brandish wins. It's the same case here. You can have all of the options, but it just weighs down the character's usefulness later. The 3rd job should have MP Recovery at its lowest since everything else is far more useful. If you're in your 4th job, you could skip Brandish, but if a new skill restricting boss comes up for 4th job skills, you might regret it. In the 4th job, Rush and Monster Magnet do not get any more range added on and are fixed the entire time. They both get more damage but Monster Magnet gets a longer stun time which boosts Chance Attack's effectiveness. It's a toss up depending on your play style. Chance Attack is extremely useful in parties. If any ally or yourself freezes, stuns, or blinds an enemy, you get the damage boost. Your new best friends are Paladins, I/L AMs, and Marksmen since they offer the most effect chances.

 My Build Post-BB

 1st job

Level 10 +1 Power Strike (1)
Level 11 +2 Power Strike (3) + 1 Slash Blast (1)
Level 12 +3 Power Strike (6)
Level 13 +3 Power Strike (9)
Level 14 +3 Power Strike (12)
Level 15 +3 Power Strike (15)
Level 16 +3 Power Strike (18)
Level 17 +2 Power Strike (MAX) +1 Slash Blast (2)
Level 18 +3 Slash Blast (5)
Level 19 +3 Slash Blast (8)
Level 20 +3 Slash Blast (11)
Level 21 +3 Slash Blast (14)
Level 22 +3 Slash Blast (17)
Level 23 +3 Slash Blast (MAX)
Level 24 +3 HP Increase (3)
Level 25 +3 HP Increase (6)
Level 26 +3 HP Increase (9)
Level 27 +1 HP Increase (MAX) +2 Iron Body (2)
Level 28 +3 Iron Body (5)
Level 29 +3 Iron Body (8)
Level 30 +3 Iron Body (11)

 2nd job

Level 30 +1 Weapon Mastery
Level 31 +3 Weapon Mastery (4)
Level 32 +3 Weapon Mastery (7)
Level 33 +3 Weapon Mastery (10)
Level 34 +3 Weapon Mastery (13)
Level 35 +3 Weapon Mastery (16)
Level 36 +3 Weapon Mastery (19)
Level 37 +1 Weapon Mastery (MAX) +2 Weapon Booster (2)
Level 38 +3 Weapon Booster (5)
Level 39 +1 Weapon Booster (6) +2 Improved Fundamentals (2)
Level 40 +3 Improved Fundamentals (5)
Level 41 +3 Improved Fundamentals (8)
Level 42 +2 Improved Fundamentals (MAX) +1 Final Attack (1)
Level 43 +3 Final Attack (4)
Level 44 +3 Final Attack (7)
Level 45 +3 Final Attack (10)
Level 46 +3 Final Attack (13)
Level 47 +3 Final Attack (16)
Level 48 +3 Final Attack (19)
Level 49 +1 Final Attack (MAX) +2 Rage (2)
Level 50 +3 Rage (5)
Level 51 +3 Rage (8)
Level 52 +3 Rage (11)
Level 53 +3 Rage (14)
Level 54 +3 Rage (17)
Level 55 +3 Rage (MAX)
Level 56 +3 Power Guard (3)
Level 57 +3 Power Guard (6)
Level 58 +3 Power Guard (9)
Level 59 +3 Power Guard (12)
Level 60 +3 Power Guard (15)
Level 61 +3 Power Guard (18)
Level 62 +2 Power Guard (MAX) +1 Weapon Booster (7)
Level 63 +3 Weapon Booster (10)
Level 64 +3 Weapon Booster (13)
Level 65 +3 Weapon Booster (16)
Level 66 +3 Weapon Booster (19)
Level 67 +1 Weapon Booster (MAX) +2 Iron Body (13)
Level 68 +3 Iron Body (16)
Level 69 +3 Iron Body (19)
Level 70 +1 Iron Body (MAX) +2 Ground Smash (2)

 3rd job

Level 70 +1 Brandish (1)
Level 71 +3 Brandish (4)
Level 72 +3 Brandish (7)
Level 73 +3 Brandish (10)
Level 74 +3 Brandish (13)
Level 75 +3 Brandish (16)
Level 76 +3 Brandish (19)
Level 77 +1 Brandish (MAX) +2 Combo Attack (2)
Level 78 +3 Combo Attack (5)
Level 79 +3 Combo Attack (8)
Level 80 +3 Combo Attack (11)
Level 81 +3 Combo Attack (14)
Level 82 +3 Combo Attack (17)
Level 83 +3 Combo Attack (MAX)
Level 84 +3 Coma (3)
Level 85 +3 Coma (6)
Level 86 +3 Coma (9)
Level 87 +3 Coma (12)
Level 88 +3 Coma (15)
Level 89 +3 Coma (18)
Level 90 +2 Coma (MAX) +1 Panic (1)
Level 91 +3 Panic (4)
Level 92 +3 Panic (7)
Level 93 +3 Panic (10)
Level 94 +3 Panic (13)
Level 95 +3 Panic (16)
Level 96 +3 Panic (19)
Level 97 +1 Panic (MAX) +2 Shout (2)
Level 98 +3 Shout (5)
Level 99 +3 Shout (8)
Level 100 +3 Shout (11)
Level 101 +3 Shout (14)
Level 102 +3 Shout (17)
Level 103 +3 Shout (MAX)
Level 104 +3 Chance Attack (3)
Level 105 +3 Chance Attack (6)
Level 106 +3 Chance Attack (9)
Level 107 +3 Chance Attack (12)
Level 108 +3 Chance Attack (15)
Level 109 +3 Chance Attack (18)
Level 110 +2 Chance Attack (MAX) +1 Magic Crash (1)
Level 111 +3 Magic Crash (4)
Level 112 +3 Magic Crash (7)
Level 113 +3 Magic Crash (10)
Level 114 +3 Magic Crash (13)
Level 115 +3 Magic Crash (16)
Level 116 +3 Magic Crash (19)
Level 117 +1 Magic Crash (MAX) +2 MP Recovery (2)
Level 118 +3 MP Recovery (5)
Level 119 +3 MP Recovery (8)
Level 120 +3 MP Recovery (11)

 4th job

Level 120: +2 Advanced Combo Attack (2) +1 Rush
Level 121: +3 Advanced Combo Attack (5)
Level 122: +3 Advanced Combo Attack (8)
Level 123: +3 Advanced Combo Attack (11)
Level 124: +3 Advanced Combo Attack (14)
Level 125: +3 Advanced Combo Attack (17)
Level 126: +3 Advanced Combo Attack (20)
Level 127: +3 Advanced Combo Attack (23)
Level 128: +3 Advanced Combo Attack (26)
Level 129: +3 Advanced Combo Attack (29)
Level 130: +1 Advanced Combo Attack (MAX) +2 Brave Slash (2)
Level 131: +3 Brave Slash (5)
Level 132: +3 Brave Slash (8)
Level 133: +3 Brave Slash (11)
Level 134: +3 Brave Slash (14)
Level 135: +3 Brave Slash (17)
Level 136: +3 Brave Slash (20)
Level 137: +3 Brave Slash (23)
Level 138: +3 Brave Slash (26)
Level 139: +3 Brave Slash (29)
Level 140: +1 Brave Slash (MAX) +2 Power Stance (2)
Level 141: +3 Power Stance (5)
Level 142: +3 Power Stance (8)
Level 143: +3 Power Stance (11)
Level 144: +3 Power Stance (14)
Level 145: +3 Power Stance (17)
Level 146: +3 Power Stance (20)
Level 147: +3 Power Stance (23)
Level 148: +3 Power Stance (26)
Level 149: +3 Power Stance (29)
Level 150: +1 Power Stance (MAX) +2 Enrage (2)
Level 151: +3 Enrage (5)
Level 152: +3 Enrage (8)
Level 153: +3 Enrage (11)
Level 154: +3 Enrage (14)
Level 155: +3 Enrage (17)
Level 156: +3 Enrage (20)
Level 157: +3 Enrage (23)
Level 158: +3 Enrage (26)
Level 159: +3 Enrage (29)
Level 160: +1 Enrage (MAX) +1 Monster Magnet (1) +1 Combat Mastery (1)
Level 161: +3 Combat Mastery (4)
Level 162: +3 Combat Mastery (7)
Level 163: +2 Combat Mastery (MAX)
Level 164: +3 Achilles (3)
Level 165: +3 Achilles (6)
Level 166: +3 Achilles (9)
Level 167: +3 Achilles (12)
Level 168: +3 Achilles (15)
Level 169: +3 Achilles (18)
Level 170: +3 Achilles (21)
Level 171: +3 Achilles (24)
Level 172: +3 Achilles (27)
Level 173: +3 Achilles (MAX)
Level 174: +3 Maple Warrior (3)
Level 175: +3 Maple Warrior (6)
Level 176: +3 Maple Warrior (9)
Level 177: +3 Maple Warrior (12)
Level 178: +3 Maple Warrior (15)
Level 179: +3 Maple Warrior (18)
Level 180: +3 Maple Warrior (21)
Level 181: +3 Maple Warrior (24)
Level 182: +3 Maple Warrior (27)
Level 183: +3 Maple Warrior (MAX)
Level 184: +3 Monster Magnet (4)
Level 185: +3 Monster Magnet (7)
Level 186: +3 Monster Magnet (10)
Level 187: +3 Monster Magnet (13)
Level 188: +3 Monster Magnet (16)
Level 189: +3 Monster Magnet (19)
Level 190: +3 Monster Magnet (22)
Level 191: +3 Monster Magnet (25)
Level 192: +3 Monster Magnet (28)
Level 193: +2 Monster Magnet (MAX) +1 Rush (2)
Level 194: +3 Rush (5)
Level 195: +3 Rush (8)
Level 196: +3 Rush (11)
Level 197: +3 Rush (14)
Level 198: +3 Rush (17)
Level 199: +3 Rush (20)
Level 200: +2 Rush (22) +1 Hero's Will (1)