I've already got a mini-checklist of things I know I'll be doing, just from the info we've got now:
1. Throw a Greybeard off of the Throat of the World.
2. Enable god-mode and spam the Force dragonshout in the middle of a town. Or possibly near a cliff.
3. Lead a dragon to a populated village and let it massacre everyone, then take their stuff.
4. Kill lots of quest-givers so their siblings will have to deal with me instead, begrudgingly.
5. Wreck as many economies as possible, but only after stocking-up on whatever the current cash-cow is. Then selling it back at super-inflated prices.
What are your plans, you big jerks?