MWO actually got me to work on my pilot as a proper character; I've even purchase the "A Time of War" RPG and a couple background books (including, of course, the old Kurita Handbook). Once my creativity is triggered it's hard for me to resist, and I can say already that it has been great fun designing this character and investigating the Combine's society in greater detail.
That being said, I presume actual roleplaying will be largely absent from the game. From what it sounds like, MWO will focus on quick and dirty PvP action - much like All Points Bulletin - so I'm fairly certain that people will have a hard time doing RP in the chat. And in APB you at least have actual "people avatars" and social spots, yet still roleplaying virtually doesn't exist there (which is a shame as the setting is quite interesting). Not because there are no roleplayers, but because the game itself does not truly lend itself to it.
Any meaningful implementation of roleplaying will require vast developer resources, all just to build a component for, let's face it, a minority amongst the target audience.
What would be possible, on the other hand, might be specific and persistent chat channels in the game (in addition to a "lobby", which I imagine will exist for people to talk about stuff whilst they wait for the next match), as well as / or special roleplaying subforums on the official website. No special rewards involved. Roleplaying is it's own reward.
Worst case, though, roleplayers can always find a different outlet for their desires, be it an external website like
this one (*shameless Kurita ad*) or chat-based RPG on a media like
the IRC.
It would be amazing if we'd get to personalize our Mechwarriors' avatars later on, though. The ideal would of course be a tool like the
facial construction kit used in EVE (I wonder if it'd be possible to license it...), or maybe a less advanced version. It could even be 2D and involve creating your pilot's appearance out of a selection of premade "parts" like it works here on
this freeware face creation software (obviously with a more dynamic stance and in full colour).
An alternative to this might be the upload of non-copyrighted imagefiles, approved by the staff to prevent abuse and possibly as a paid feature. PotBS allowed you to send in your own flags, and as far as I'm aware the MWO devs were planning on offering customization as paid content, anyways.
Oh well. If nothing else, I can always try to whip up a game of "
A Time of War" with a couple friends.