In terms of individual role-playing, I'm sure how people digest Incarna will vary widely...just like all the other little things that we have to come to terms with on our own (warping through planets, docking and undocking a hundred times a day, the repetition of missions/complexes, and all that). But those things don't have much to do with the way we
really role-play, and neither--I think--will Incarna.
I'm going to make a comparison here that you might shoot me for, but a few years ago my wife and I dabbled with Second Life. In SL, you could create any kind of environment you wanted, tailor it to specific groups or events, and do it
damn well. But even if you offered up the most beautifully crafted and expansive castle, space station, tree village, or saloon town possible, people would still end up just standing around in the most convenient open space, filling up their viewers with chat and IM windows.
1My belabored point is that people almost invariably default to the quickest and most convenient form of communication. This is why the vast majority of people text more than call, call more than visit, and send emails rather than calligraphic parchments through the post. Getting pod pilots to drop their business, congregate in a station, and sit around in a circle will be neither quick nor convenient compared to the alternative: staying where you are, continuing to grind your isk, and giving a portion of your attention to half a dozen different communication windows.
It is a philosophy of our age that content trumps form. And that is why I'd bet big isk that Incarna isn't even going to put a chink in our current way of doing things. There will assuredly be some stationside, vis-a-vis role-play events, but they'll be few and far between. And awkward. When your convo partner goes afk for five or ten, it isn't that big of a deal if it was something going on secondary to shooting rocks or red crosses on the other half of your screen. But when you are in a room with nothing else to do, just watching the inanimate avatars blink their eye-orbs and scratch themselves...yeah.
1This is of course why Second Life declined quicker than Motsu after the mission redistribution. People figured out they could do the exact same thing quicker, easier, better, and more reliably with any number of other tools...the only price being those castles that nobody was really looking at anyway.