1. How about Ruger making FA style 5 shot single actions in "big" cartridges, but priced around Rugers current linup.
2. I'd like to see a modern design single action breaktop revolver that can handel "serious" pressures. I think the problem with this isn't so much that it's undoable as there's no demand, and it would have to be much larger and/or heavier than comparible single actions. failures would also be much more violent than in gate load revos, instead of a nice bulged frame and split cylinder you'd probably get something like the barrel swinging down and off and into your crotch.