Daggerfall remake? That would take an eternity, and Bethesda isn't the type of game company to live in the past, they're about moving forward.
All High Rock? Why would they do such a thing? They could make a whole game in High Rock, why ruin it with a little DLC? Even if it was a full fledged SI expansion, it couldn't get the attention it deserved.
I guess Blacklight would be okay, but meh.
Since they probably won't do a big SI-style expansion, I'll just ask for a few KotN-style DLC and be happy.
The game itslef hasn't even come out yet, and you want to discuss DLC's?
Every time a DLC thread pops up someone says this. Why? It's to discuss the little extra things, like major quest lines that aren't going to make it into the main game. The Shivering Isles was a big thing for Oblivion, as were the expansions for Morrowind, and Knights of the Nine was awesome. It's not at all ridiculous to be thinking about DLC, given how awesome DLC has been for the series in the past.