Thanks, learned a lot in the last 10 minutes
So RT is not really needed...
Well, PBR wasn't really "needed" - what it did though, is move to a "more" modern rendering pipeline, that new hires/younger devs would be more used to, and it it a better pipeline that has more potential for future graphical updates.
What it also did, was create WAY MORE work than I think they thought there was, and seems to have totally sideswiped them and they still haven't caught up with that.
Ray tracing would be even more of a modern pipeline (I saty that but raytracing has been around for eons, just not in realtime), (but possibly too modern for all those new hires/younger devs to be entirely familiar with it right now) and has even more potential for "Better" graphics (though that is entirely down to the artists, you can use whatever system you want and still make trash)
It would create the same amount of work they still haven't finished, again, as they'd need to re-do all the shaders to work with the new system.
So... it would be a pretty bad idea. (IMO)