MarkB
Legend
I like turn based. But I think real time is more popular, and it probably makes sense to cater to the majority if you want the game to be successful.
There have been some pretty popular turn-based games in recent years. Aside from traditional RPGs like Larian's existing Divinity Original Sin games, there are tactical combat games like XCOM, and a whole host of successful JRPGs.
WotC chose to work with Larian due to their RPG pedigree, and it seems very likely that their successful implementation of turn-based combat was part of that.