I didn't bother reading this, because whatever I think isn't important. The CEO of Larian commented on RTwP in this interview. Skip to 29:24 for the relevant question.
https://www.twitch.tv/videos/76335187930:03: "There's much more tactical depth that we are able to put in there, that we wouldn't have been able to do in real-time-with-pause. Which, ends up, if you want to have that tactial depth [in Real-Time-with-Pause], being pausing continuously."
30:30: "Actions, bonus actions, movement, manipulation of your actions, manipulation of your bonus actions, getting an extra action - all these things are lost when you make it real time."