Takebacker's Ultimate Brawler Guide

I say that hp and critical are far from priority, simply because you can max the hp skill last and still have the same hp as if you maxed it first, but those first 4 levels won't be as hellish.
I would reccommend 1 elbow at 30, max mastery, 6 booster then max elbow, followed by booster, hp, screw punch, oak, mp.

I only put them there because 2nd job is a joke. Mushroom castle makes things much easier, so it doesn't matter what you do.

Then in 3rd, it's pretty much fine, it's much more open to personalization, but why is infighting mastery maxed last? You get so much more damage for elbow and screw punch, making your non-energy time much more powerful. I'd max infighting mastery first, along with stun mastery, just so Ariant/C-2/other flat maps in 8x-10x work out well. Spamming elbow is very very nice.

There's a clear response to this in the build explanation.

I can't say planning for ariant/C-2 training is wise when we don't know what will happen to GMS exclusives. If nothing is changed, WRs will be the best training spot for 6x-100. Spamming BSB is nice, but the damage is already high enough to kill as you go along the map. CSB...the damage boost is nice, i think other skills are more worth the points though.

4th is fine, again, open to interpretation. However, I get MANY complaints about SI being too short when partying, so if you wanna throw 1 extra point into SI just to make it even with HS, then that is encouraged.
The whole 'free points' should go into SI.

W'tf? 110 seconds isn't that bad a timer for level 1. Rebuffing isn't that big a deal, really.

I have an entirely different 1st build suggestion for anyone past 4th that is gonna use the SP reset given: Max dash, leave ssk or flash fist at 11. It's nice for anyone too cheap to buy a mount, and if you use that whole 'accidental activation' bullpomegranate argument, then you need to go kill yourself.

I don't even need to use the accidental activation as an excuse anymore. You have 40 spd/20 jump from ST 90% of the time and normal transform for the other 10%. Getting dash for speed/jump is even more useless now, especially with guild skills giving the same bonus as dash with no activation.