Sorry for extreme delay in getting around to replying. Anyways, yeah, I agree that TDT is nice and solves various things. I don't want to completely toss it out. My point was simply "I think it's very very important that we modify the original form of it to be able to deal with this issue. Here's what I think would be one way of doing so that fits with the same sort of principle that that TDT is based on."