.... a 64-bit 6502, now there's something worth looking at.
Seriously though, I am intrigued by, and I'd even go as far as to say I like the idea of the IIgs clone. What it sounds like to me is the best thing to try to do is to make it something accessible to as many people as possible. Up to about $100 for something that's a complete starter kit into the world of IIgs would be pretty nice. Especially if you got the rights to distribute some software with it, one or two different variations of the operating system (GS/OS 6 with hypercard, and prodos, at the very least)
The biggest most-important things would be that it's a fairly small box in moderately attractive (not really ugly) packaging, and I think it's moderately important to include basically the same ports as the original IIgs (although the funky monitor port could be swapped out for VGA)
Then you could look at building in the functionality of some of the more fancy cards, for example, by emulating a scsi addon card and including a Compact Flash slot.
But I don't know if it's really worthwhile trying to redesign the platform, or add so many things like Ethernet, especially in the first version of the box.
For what it's worth, I've always been interested in whether or not anyone would try to do a 68k Mac clone. I'm sure it's been talked about, but I'm also sure the legal issues prevent it from making any progress.