I will bear that in mind Paleo,
Bought an international stamp with a sempervivum on it a while back and I'm not exactly a stamp collector. Should a time come I'll Treemail you. At this point I have one furry long stolon plant I like, as well as a thin leaved heavily ciliated one. A couple wide leaved ones I like may have long stolons, but their just starting to offset. Will keep you posted.
I think it might be cool to enlarge the stolon leaves to the point that they contribute to the overall colony, it would be wild if you couldn't tell where a plant began or ended, just one big mass of spreading leaves. obviously thats not the traditional vision of hybridizing the perfect sempervivum, but imagine a plant that grew like Euphorbia Myrsinites that was in the sempervivum family! I bet it'd look awesome streaming down from a hanging planter or along a pathway.
Lots of possibilities for these plants, the bumps, ruffles, kinks, stolons, fur, shapes and colors really offer us a myriad of ways to go. The best part about hand crossing is that you can pursue multiple distinct visions in a mutually isolated way. First I'd like to establish some plants that will appeal to the collectors, but on the back burner I'll be cooking up some science experiments that might turn out really cool down the line.
-Sol