Since work has begun on BG2EE I thought I'd mention this. As the situation stands there are so few caster HLAs that you simply run out of them before finishing ToB, and have nothing to pick on level up. On my last BG2+ToB run this happened about half way through ToB so my casters gained plenty of levels with no HLAs. This isn't even an issue of having poor selection, it's simply that there aren't enough of them to have any kind of choise.
Melee don't have this problem since they can pick same abilities over and over again, but casters don't have a single ability you can pick multiple times.
Melee don't have this problem since they can pick same abilities over and over again, but casters don't have a single ability you can pick multiple times.