It sounds like you don't trust Larian to make changes and you'd rather have 5e RAW rather than what Larian has come up with. Which is fine (at this point in time I also would prefer full 5e RAW), but I think it's better to advocate for specific individual changes rather than tell Larian to remove all of their hombrew. I like some of their changes after all.
I don't think it's a matter of "trust" at this stage. Larian has put their vision on display for about two years now, and they have made it clear that they do not like the PHB and do not want to preserve the balance and identity of 5E. I would be happy if Larian started with 5E, and then incrementally improved on it, but that is not what they chose to do, so none of these arguments about "improvements" matter. It's not an "improvement" if you make worse mechanics without even trying the original ones first.
