I am early baker.
I've created my project, you can see it here:
http://ouyaforum.com/showthread.php?1092-My-Beloved-Company&highlight=Beloved+Company
Comparing to weak tablet I've got the same FPS on App Game Kit software.
So, my question about LE3 is not "to start develop on OUYA or not", but "how to do it" :-)
Hopefully, we would check LE3 on OUYA, at least I hope it will work.