"I see a possible future of all National HD and Local HD LIL on 105 and 129."
It's unlikely that national HD would ever be on 105, since it's a FSS, SuperDish-only slot, spot transmitting only SD locals IIRC. That means that some of the locals could be transmitted in HD from 105, but not national HD channels. It's anyone's guess as to what E* will do with 129. I think that HD distant networks (what is that? 5 or 6 cities?) and at least some other major locals will be transmitted from 110 or maybe 119, unless 129 is used for ConUS, national HD transmission. At least five or so locals have to be broadcast ConUS for digital distant networks, allowed next year. In that case, 129 could be used for distant HD networks and national HD because E*'s official E5 description did not mention spot transponders. Charlie has said HD LIL is not cost effective, but I think many will have to be offered, anyway.