I really don't want to seem to rain on the parade but : as I haven't yet seen and fiddled with the basic product - I can't really be enthusiastic about a cluster at this time. It does sound good and yes it is a natural progression, for sure. But my suggestion would be to pop this on the back-burner, as it is quite likely that you will receive much more informed comment and
thus a better final design when the community has really walloped the base board through it's paces ....
Cheers, Mike.