As a sound editor who works with a lot of video editors, I assure you that there are MAJOR problems with FCPX and that cosmetics and the fact that it is different have nothing to do with it.
FCPX is designed, from the ground up, to be a complete working environment, one that is radically difficult to make workable with others, and that it basically ignores the fact that film-making is a collaborative process.
This is great for small-time videographers who want to do everything themselves. And I mean great.
But it is IMPOSSIBLE to use as part of a post-production team. FULL STOP.
These are the facts, and it is no accident that Adobe Premiere has had their best year ever due to this.
What makes me worried about the current Apple ethos is that it will be going in this direction, that collaboration between different platforms will become increasingly difficult as Apple tries to keep all work in their walled-garden. It's the "not-playing-well-with-others-on-purpose" aftertaste of the FCPX debacle that makes me wary.
And I've been using Apple machines since the Apple IIe...