The thing that I find problematic is that we haven't yet gotten to playtest a bunch of stuff at all: no dragonborn or tiefling, no sorcerer, bard or warlock, no multiclassing- all important elements. I would expect that those things ought to receive at least a chance at revision through playtesting, and I'd think that a massive playtest of multiclasing would "stress test" a ton of combos and ferret out a lot of hidden problems. Here's hoping that there's still enough time for feedback on this stuff to matter.
Also, here's hoping for a fix to the human!