ProResRAW is good format- you can call it pro format, but so it's any other RAW video format out there (ARRI RAW, RED RAW, Sony RAW, BRAW etc).
How many cameras record only in ProRes RAW? Answer is 0.
How many top tier cameras record in ProRes RAW at all ? Answer is 0 as all have own RAW formats with full metadata support etc.
For how many top tier cameras does Resolve have support? Answer is ALL.
If anything then ProRes RAW is more a hobbyist format than Resolve a hobbyist grading tool
Resolve is used on top production which use top cameras. For this no one really needs ProRes RAW support. Any ProRes RAW footage which may arrive can be handled outside Resolve.
It's actually hobbyists who try to use cheaper cameras (and PRO in theory oriented but FREE Resolve) who need ProRes RAW support (to get most of their cameras).
Resolve itself is a 'problematic tool'. Priced for amateurs (but coming from very PRO world) with set of features which (still) can't pleased them, yet many of them taken resources from developing better features for PRO users. No idea who is Resolve primary target today? BM tries to please everyone, but this is going to be very difficult and may end up badly at the end.
Lets remove some RAW formats support in Resolve and add ProRes RAW support. Will you call it then PRO tool? If so you have a tool like this already: FCPX. Great ProRes RAW support (also some other RAW formats), not expensive, fast, so perfect tool for you. What do you need this toy Resolve for?