gGeo all your points are right on the button, just a few additions:
- despite the speed tooltip telling you otherwise starting AP bonus is also (SPD + PER)/2 . Getting SPD is always better.
- PER never matters for shooting over long distances, even for rangers. Abilities/arrows never miss and the enemy is disabled most of the time giving you 100% on normal attacks. You start every fight with 2AP +50 hit chance farsight or bless/blessed earth anyway.
The only uses of PER are secret detection or crossbow ranger crit chance. On backstab rogue a bit of str/int can theoretically be useful for better amor and 100% novice spells so PER is literally the worst stat that you can waste points on.
Unless you can only escape a fight once, or something, but even a single escape can change a fight. In theory, it's actually an obscenely overpowered talent and it's funny that people think it's the worst talent in the game (as I used to, but I've come to realize its potential.)
Yeah, true but taking advantage of split turnbased/realtime mechanics is kinda overkill for cheesing poor AI

You might as well just start throwing 2ap grenades without pinpoint as far as you like and let them cook off in aoe/force attack them with 2 elemental bonus weapon for triple explosions.