Mojo is not about dispatching at all, Mojolicious is just an example of whats possible with Mojo. The web is a moving target, things need to move forward, bi-directional HTTP is happening. What Mojo provides is a replacement for the ancient and RFC ignoring modules Catalyst was built upon, we are ready for Comet and WebSocket for example.

I actually asked the Catalyst developers to join the Mojo project and be the first framework to use it, they couldn't make a decision. But i needed a good example framework fast, so Mojolicious was born and i'm exploring new techniques with it now...

Nothing in Mojo will keep you from using Moose, want to build Moose on Rails? Just do it! Mojo is plain old OO Perl, no more no less.