that would be very hard even for us me thinks, as one of the ways we get the mini is due to recompiling all the packages for less dependencies, etc etc.
Also, you'd be suprised at how much people want and yet are willing to give very little, as we have no sponsers, again, the cost benifits are absolutely nil to us and would be hard to justify our man ours towards that. But yes, binaries are nice, but kinda against the whole source based ideal, which is what gentoo is and we follow
anyways, I'll do some more research into it. If you can, get people that would actually like this feature (which would be hard since they usually migrated towards FC and ubuntu and their derivatives) to post about it, so far, I've seen only you for it (which isn't wrong or anything, just a small percentage of the user base)
but like I said, I'll look into it more....we'll see