I actually think bethesda might wait until the skyrim trademark runs out because of two things beth change their minds alot(daggerfall was originaly going to be in the whole of morrowind)and the other reason is look at bethesda's maps cyrodiil is much bigger than skyrim so wouldn't it take less time to make so I think bethesda might have more than just skyrim so they leave it until the skyrim trademark is gone then make a new trademark so it doesn't mean there is only skyrim and then announce it or they won't wait untill the trademark is gone and over exaggerate the size of skyrim or make it less bare and more varied then cyrodiil.And they might not even be working on it yet.
Yeah, you're right. Bethesda wasted over four years sitting on the Skyrim trademarks waiting for them to run out until they can finally trademark a new province name for a game. [/sarcasm]
The size of the province absolutely does not matter. Bethesda can scale Skyrim however large or small they want to. Cyrodiil in lore is much bigger than what the game "Daggerfall" took place in, yet "Daggerfall" was FAR bigger than Oblivion's Cyrodiil.