Thank you for forwarding this Vieve, very nice of CCP to extend the question over here:
As a specific area where i think PF and RP meet/clash/differ is in the description of Space Stations and Player Owned Structures operate or what are their facilities in general. I remember reading various chronicles about "upper levels" for the Elite capsuleers, and also the Jita chronicle talked about Capsuleers not being allowed.....and there is also some RP that is often assumed from everyone regarding the internal distribution and facilities. So i think Space structures in general are a topic that should be polished quite a bit.
An area where RP has had to fill in vs PF is Federation Politics, Fed government structure and other such details. The Intaky Assembly in particular stirred quite a bit the "regular" RP concepts held before that time. (Probably the same is needed for Minmatars, a bit less for Caldari and Amarr).
The one final thing that, in my view, has been discussed from an RP angle, but never really hinted in any way in PF terms, is regular population growth, travel and education. Just how fast planets get populated? are capital worlds uber-crowded? are there any incentives to move out to less populated worlds? is education centralized around major population hubs? or in NPC school stations?.
The above 3 things do give out a LOT of groundwork to build up your own character history and how he came to be a capsuleer, or how he lives in station nowadays....so in my perspective those are the ones with most impact on the short term.