I'd also add to move away from the cartoony characters to something a little more immersive of D&D. Something like Tolkien elves, humans, orcs etc. Wizards and rangers. I'm assuming with the title being BG it will fall in line with existing style but brought up to date of course.
cartoony characters? If u are referring to graphics than I think that Dos2 has solid art, for example Pillars of eternity turned me off with theirs graphics approach, IDK if its a good or bad game, thats just my taste, I cant stand to watch hours on end and be immersed with static drawing action, its just not my thing and thats why I choose Pathfinder:kingmaker over Pillars of eternity but if u are referring to character development its not that bad in Dos2 especially in todays standards where its a trend to just pump out a game without ANY story whatsoever..