I'm still in a holding pattern of dabble and design, so I would still be a year out from any completed game, methinks. I'm hesitant to dive in headlong until I see some measure of good faith from Larian that they're serious about supporting this because it's rather lacking at the moment. I got burned by Dragon Age and don't want to invest tons of time again just to bang my head against some frustrating impediments that never get addressed.
That said, I don't think there will be a problem with finding people to play. If you are enjoying what you are doing and can see it through to the end, I wouldn't concern yourself with audience size. The graphics and gameplay will still be relevant for a long time and people will enjoy new adventures if they are well done.
