For myself I would like the adventures and world information (ie everything from Pathfinderwiki would be SWEET). The only part of the Bestiary that I would make use of is the Fluff Text and Images. The hard-rules statblock is left to HL to deal. I don't run combat from RW.
I also don't see myself needing core rules mixed with my campaign stuff. To me they are just two very separate things that work better using different tools. In this case using d20pfsrd for the rules and RW for the campaign.
I recently starting entering info for a new Realm for Dragons Demand. I tried putting a few monsters in the mechanics section to see how it would work. I stopped after 3 as I found it allot of work for little gain. Plus visually seeing the statblock in RW is SUPER hard for me to read. I don't know why but looking at the statblock on d20pfsrd is way easier for my eyes to parse the data.