Having "enable" features and "sliders" after it's finished would be nice for some things; but definitely like you said, should be low priority for now. It is all being balanced as they see feedback. People (myself included) posting about things they would like to see altered, is mostly in response to certain mechanics being vastly changed from core rules. While some things need to be changed since there is no DM or just because pen and paper doesn't translate well to pc, most of it should remain as true as possible to the core rulebook. Then add sliders or options later for people who want to "house rule."
I love the fact that Larian adds their own flare to the game. I like creating surfaces, and want that to stay, as it adds another level at tactical gameplay. I do however think they need to tone that down a little bit.
Long rests, as it is currently implemented, serves no purpose. They had may as well save us the 30 seconds it takes to "go to camp" and make It work like short rest and remove the short rest option (God I hope they don't do that).
Turn based is how d&d is played, and RTwP would invalidate the core 5e action system, so I hope that doesn't change and don't expect it to
