Let's look at how it used to be, with stats so wildly useless that you really didn't see a change in mitigation from 110 VIT to 174 VIT, it was just for HP purposes.
It's no concern because of this fact:

I think it will be exactly the same allocation system we had before, except now it is class specific.
Everything else fixes itself. If you die in one hit bigger numbers mean nothing, and you will do no damage while dead. So to min/max you aren't going to bottleneck yourself like that.