Avoid ranged touch stuff on your casters because they will miss them half the time.
This is what true strike is for.
Typically wizards using these spells should have high Dexterity for a nice bonus to hit and either take Point Blank Shot and Precise Shot for their class feats, or a level in Fighter to get them.
Yea that all certainly works, I did it in Kingmaker, true strike before important touch spells, and get Point Blank Shot and Precision Shot, and also lots of Dex. But that seems like a huge cost just to land spells. Two feats, a lot of points in a secondary stat, and then a spell you have to cast before casting other spells. Pfft!
This time I just went for straight nukes and I think it is much better. Don't need to try to cast true strike first, don't need to waste points on Dex, get int max and spend any extras on whatever. And I could focus on only the best usual wiz feats, improved spell penetration, etc. I even have enough feats and points left over that my Wiz has become my diplomat, and he has really high tumble which seems to be awesome on a wizzy. Especially in this game. All the ambushes when you end up surrounded, I just run him out of the clusterfuck and start nuking stuff from a safe distance. I don't even need to use his 5 foot step most of the time.
My last play through I used Acid Arrow all the time, because I like the idea of damage-over-time. But this time it feels weak, even when it does land. It only hits one person too. I used to use it to finish off trolls, but now I just use coup de grace instead. The only ranged spell I like is Scorching Ray, that seems to really pack a punch.
Purchased recently the game and i an playing with Co8 mod. OMG, ToEE is better than BG/IWD and i love both games...
I really loved playing through IWD 1 and 2, the second one especially. High level D&D combat is really fun for me because I like wizards. I liked BG2 as well but I don't like all the dialogue, chore quests, and lots of running around. I prefer combat focused games like this one. This game rocks, but I do think the battles are mostly too easy after a while. I agree with the "house rules" idea above, if you min max too hard, you just gimp your own fun. But if you play it like a normie, it is cool and still some tough battles.