Well, here's the ultimate plan: two distinct gameplay styles: realistic and arcade. Arcade would be what we have now where you jump around at 70mph and do insane jumps. Realistic would be more like the half-life mod, where you move slowly and can lean and whatnot. In fact, I might even see if we can join forces to make a top notch standalone game.
Before we can do a realistic mode, however, the core engine needs a LOT of work. So, in short, "Maybe some day, but not today."