I agree with bomber, you will gain and loose users throughout development. Right now if I want to run around shooting people up I can go to ARMA, dogfighting DCS, driving trains TS2015, racing Project Cars, etc. etc., When I want to sit back relax and have the most realistic flying experience in a helicopter, enjoying flying on any point of the earth with the Oculus Rift on I come to OT. It's still fairly early in its development and there will be plenty of birth pangs(that's to be expected), Rome wasn't built in a day, so taking time even if it's years and years from now I can see the potential. We just need to get all the game developers out there to see it. One base engine to play train sims, helicopter sims, FPS sims, tank sims, military aviation sims, civil aviation sims, mech warrior sims, racing sims, survival sims, boat sims, construction sims... Everything united under one incredible piece of programming, heck even combined online someday so one person can fly, other players can be racing along roads while others are working the railroad. This is something big and something this big will require a lot of time to get right. I'll be here all along the way.