I've had mine for over a year and absolutely love it too, it's just amazing how capable the x1 is going downhill. I think you would probably be better of getting a complete bike and replacing some parts. If you're going to give the bike a beating some sturdier wheels might be in order, but most of the parts are going to take a lot of abuse, stem, crankset etc are really beefy.
I haven't had too much trouble dropping chains as well, but i put on a chainguide anyway since i hardly ever use the small ring. I'm using the mrp g2 and it fit perfectly without any modifications.
One more thing: the rear suspension is really, really good; your wheel is going to be glued to the ground which can make jumping a little more work than on other bikes, the x1 certainly does not "pop" like some single pivots out there.
I haven't had too much trouble dropping chains as well, but i put on a chainguide anyway since i hardly ever use the small ring. I'm using the mrp g2 and it fit perfectly without any modifications.
One more thing: the rear suspension is really, really good; your wheel is going to be glued to the ground which can make jumping a little more work than on other bikes, the x1 certainly does not "pop" like some single pivots out there.