I quite like fast rigid lightweight 29ers, heck I own one. And though mine is steel I'm not averse to composite construction, some day I will ride one. But I have to admit they are all beginning to look rather, well ... similar? And I can't help but feel a bit sad over that.
On the flip side, in a not too distant future mass produced 1? kg frames with proper geometry will be cheap as chips. And that makes for an awesome ride accessible to many of us.