5E would be very welcome indeed. Modules and adventures mostly, as the core rulebooks are one everyone's table (I assume).
My biggest fear for WOTC issued RW material is the cost. I looked at what they were going to charge for Fantasy Grounds, and it is appaling.
But first and foremost I want RW to launch the updated 5E game system definition so I can export and import stuff!
Btw., are there any exports (by users) shared with the community? "For personal use only"