nah, i don't like tactics. enemies in tactics are cheezy (sequencer with improved inviz, pf abjuraction, pf divination on every boss, give me a break) and inspire me to abuse because it's the only way of beating them. and no matter how >9000 they are, they are just as easily beaten as the unmodded game if you do things like wish spam or quadruple projected images... scs/scsii is much better than tactics imo. it improves the monsters' decission making and gives them a fair chance against the party but doesn't give them unrealistic stats and abilities. it's perfectly possible to beat it without massive abuses.
i also don't like underrepresented items for the same reason. those plague darts are just plain cheating, so is that +5 staff that has the same range as a sling. i did solo the game (+ tactics) with a monk by constantly abusing those darts. i also used the oversight mod that replaces standard warrior hla-s that monk gets with balthazar's abilities. it was fun but i grew tired of it relatively fast.
i tried kensai->mage a while ago. it's really nothing special. pure kensai or kensai->thief are much better kensai builds. a sorcerer, berserker->mage or gnome fighter/illusionist multi are better mages.
started a bounty hunter because i've never played a thief main char trough the original game and bh is so fucking overpowered (in a fun way) once he gets to tob.