Big thumbs up to OP. I actually came to the forum to address a number of the issues mentioned and was pleased to see that it was done already.
I just want to re-iterate a couple things - Rage in its current state is utterly OP, and even more frustrating is it removes the point of crit chance bonuses from items/stats. Why bother increasing Wit when you can just cast rage? Please change/remove this spell.
Other imbalanced skills: the elven racial trait is too strong right now (25% dam and +1 ap by far outshines the other traits). Likewise, as OP mentioned, snipe + rage can basically one shot anything in the game. My last playthrough with a ranger class was doing 2000 damage snipes from stealth by the end of act 1. I think this would be mostly fixed just by rage being nerfed, but thought it was worth mentioning. Lastly, Warlord is OP, and lets you have virtually unlimited AP.
Two, wizards are significantly weaker than fighters in D:OS 2. This was true in D:OS 1 as well, but the gap wasn't quite as great. This is primarily due to the fact that they just due way less damage, and are squishier, due to having to split attributes, skill points more than fighters. An elven two handed wielding fighter with warlord, rage and adrenaline can finish every combat encounter in act 1 in a single turn (with the exception of the last encounter, which can take a few more). I kid you not. One single turn, because of the 2 bonus AP from Warlord for killing an enemy. Maybe fighters are just intended to be a lot stronger than rogues, rangers, and wizards, but if not, I feel like the game is going down the path of D:OS original, where a two handed fighter could finish every encounter in the game in a single turn. The only exception was death knights where he could only remove invulnerability from one at a time, and so had to wait. A properly built fighter could even one shot the void dragon with flurry. Fixing rage and warlord will go a long way towards balancing them, but I think overall damage output of two handed weapons needs to be slightly reduced, or other benefits added to shields, dual wielding, etc.
