Personally, I think they would entertain it, but the implementation has to be fairly good and they have to be up for maintaining whatever that implementation is

Personally, I think they would entertain it, but the implementation has to be fairly good and they have to be up for maintaining whatever that implementation is. There was a lot of hemming and hawing about hot standby & replication for years, but once someone showed up with a credible implementation and track record of maintaining and fixing it, the objections seemed to get a lot quieter. Hints are a somewhat invasive feature that are hard to tweak once they are integrated into applications. I don't think the half dozen people that are in the best position to consider its evolution have found it the use of their time they wish to expend.