Having said that DOS1 was mediocre overall. If DOS2 is anything similar to that, then Kingmaker is better even as RTwP game. And with TB mod its much better than DOS. But since I haven't played DOS2 i can only compared to DOS1.
You have great points, but you are ignoring a huge problem with turn based combat. Large scale encounters can take eternities. If you have 666 skeletons + 6 party members fighting a army of the same size, a single round in RtWP can take 6 seconds BUT on TB can take hours.
Sure, you can implement concurrent turns to speed up the combat and make the 666 skeletons and enemies move and attack simultaneously. ToEE did it.
And most people associate classic RPG's with Baldur's Gate but there are a lot of other amazing 90s RPG's. Like Dark Sun(Turn Based)