I havent checked into the toolset yet, gonna need a good pc to do it i believe and wondering if anyone or a group is willing to make extra landmasses next to Skyrim. If you havent noticed there is Morrowind to the East, High Rock to the West, Hammerfell is South-West and Cyrodiil is South. Very much like to see the whole continents of it.

Hammerfell and the Northern portion of Morrowind would be great additions for sure. Maybe Bethesda will tackle one of these in the expansion(s), who knows?

Also whilst asking for all of Cyrodill would probably be overkill, a 'return to Bruma' mod would be pretty nice. Bruma's weather would have to be milder than it was in Oblivion however or we'd have some real consistency issues with the climate of southern Skyrim.

That is true, wasnt sure if Skyrim's Engine will be enough. Im sure there will be needed some prefabs and other creatures to add. Wondering if Oblivion models and sources will be compatible with Skyrim?

Ha, you ask this like you're requesting a weapon mod.
Lol, just messing with you. Someone is already working on a new landmass. High Rock, iirc. The same team that did the valenwood mod for oblivion. Here is a thread:
http://www.gamesas.com/index.php?/topic/1256368-wip-high-rock/

Cool thanks, cant wait to play it someday. But it wont be anytime soon though.