[1.2.381] The Wind

More Holy Weak bosses/mobs -> super Bishop boost as well.
WRYYYYYYYYYYYYYYYYYYY

Elemental weak bosses provide for those perfect scenarios you mentioned. However, I should have made it clear that by making all-elemental strong bosses is the part I'm referring to as bad design.

Earrings, chaosed shoes, and capes all give way more m.att than what is allowed for w.att. Even gloves can have more m.att (cheaper to boot), and if not you can get a flamekeeper cordon. Int is like the cheapest % stat out there too.

I'll give you earrings.
Chaosed Shoes vs w.atk shoes are about equal in difficulty getting decent amounts.
M.Att gloves are more rare. 70% glove m.att scrolls give only 1 matk. 60% glove m.att scrolls are hella expensive.
Flamekeeper vs SCG, both are about equal in difficulty to acquire.
INT% is cheapest, I'll agree there.
However, more w.atk pink scrolls available for 2H weapons out there than m.atk pinks for mage weapons.

Kill a toad or two. Boom. Free ele staves.

Sure, find a boss that hardly exists.

Ok then.
Reverse weapon is about 135 average.
Toss in an advanced Sapphire and you have 138-140ish.
Toss in an Advanced Black Crystal and you could potentially have 140-145 matk.
Add in 3 levels, and you're left with about 143-151 matk.

Even then, none of our weapons reach the high attack clean. Then there are earrings, shoes, capes, and gloves too. Like Takebacker said, %int is cheaper than any other %stat.

I'll give you that. But last I remember, maker's going away and there's sadly no customization in the new crafting system to boost m.atk.