A Use for Classes.

[Bishop81]

And I'll give you the benefit of the dlubt that you only mean aoe mechanics can be ignored not mechanics in general. If you fail to destroy the nails, you still die to Ifrit.

However, I don't see your plan being actionable. The enemies would need to give the jobs plenty of things to dodge and the classes their own things to do so the fight isn't a forgone conclusion once they allocate the stats.

Any mechanic that can't be done with a high ping. Things like killing nails shouldn't be too big of an issue even if you have high ping.

Classes will be doing their own thing while Jobs are dodging.

For instance, hey could add a Class-only passive skill that makes one immune to knockbacks like landslide, but leaves a debuff that you will have to clear if you do get hit by a knockback. The method of clearing can be anything, as long as it's not too costly in terms of DPS (there will be of course some cost), and isn't as timing sensitive as dodging - kind of the point.

Overall, it's just the trading of the dodging mechanic for some other mechanic.

Will it be easier on Classes? Maybe. But you do have to spend time and energy getting all the skills and gear - skills might interact with stats on gear.