The real problem is that there are too many useless fights with trash mobs. Removing most of them and keeping only the challenging and memorable ones would be a better thing.

Another option is an option to switch between real-time with pause and turn-based at will. The Pathfinder games do that.

You could dodge spells in BG2 as they have travel time, you can't dodge spells in a normal turn based system. Also spells have different casting times, some cast instantly others were so slow that people could walk up and hit you before the cast got done. There are many such differences, BG2 is in no way a turn based game. Its real time combat did simulate turns for spell and attack cooldowns etc, but even those weren't properly aligned to turns, a spell cast time could take a fraction of a turn, and travel time for spells were also fractions of turns etc. So wasn't turn based no matter how you view it.