>>720316810
vanilla classes like fighter in bg1 are on simpler side because you are not controlling 1 char but all 6 in real time with pause and 100% mismanaging something all the time anyway. Late game even pure fighter has to micromanage HLAs and item actives during combat. if you more options pick multi/dual classes or more advanced kits you.
Also only specialization points on level up is not a full picture, you constantly change spell setups, contingency, sequencers and items actives. Big part of bg2 char building comes from item and party setup, something not mentioned yet is how good BG1/2 legendary items are and way you acquire them still mogs 99% of CRPGs games of today. There are late game items you build your entire char around, even item lore descriptions are superior to most games.