Eh, in my opinion, quite a number of those are not worth bringing back.
Assassin was removed for both being too powerful, and because it had the warrior stepping on the role of the Rogue too much. Mack the Knife was when Daggers briefly cost 3 AP, and it can't be put back in because 1 AP daggers would be insanely overpowered.
Quick-witted is another one that probably few people would really take, much like the "Wisdom" skill in previous games. In part, because it desynchs your characters XP, also, those rarely provide enough of a boost to be worth the point anyway.
Dress Rehersal was probably removed because gear was never so critical that you wanted to waste time switching it mid-combat.
Back in the alpha/beta you used to get a Talent point every odd level, not every 4 levels.
