I think she could pull off a showcase two-date stop in LA and NY. I've been saying this for ages now. It could be a stripped down set, sort of like what she did during the TA 03 tour. I would rather sacrifice the spectacle and the operatic theatrics of an Ayu show for a chance to see her -- I think it'd be more intimate that way, in a sense.
I'm not sure how feasible this is financially or professionally, but it is a nice thought to have