it would be nice to see the option for custom servers to alternate between a turn based or a live action ruleset. If you remember Pillars of Eternity 2, they released, some time after launch, a very popular turn-based ruleset.
Same goes for Kingmaker. The turn-based mode was not very popular for either, at least not in the sense that it distinctly improved sales.
Anyway, slowing down RTwP to a crawl works, speeding up turn-based so that it isn't banal and boring as well as fun in multiplayer requires quite a bit of work. In other words, it isn't going to happen.