ie homes? landmasses? new towns?

Here's a couple to start you off.

an overhaul:
http://www.tesnexus.com/downloads/file.php?id=34245

and a house:
http://www.invision.tesalliance.org/forums/index.php?app=downloads&showfile=120

Integration adds2-3homes there, a guild(which you can join), a brothel, a secondary entrance/exit to the realm, and several other locations.
http://tes.multimediaxis.de/?go=dlfile&fileid=349

Wrye has two Shivering Isles mods that are pretty nice:
http://wryemusings.com/#OblivionMods

Also for houses there's always ORE:
http://oblivionsrealestate.com/Find_A_Home/Shivering_Isles/shivering_isles.html

And there's a big dungeon mod here:
http://www.tesnexus.com/downloads/file.php?id=30279

EDIT:
Also here's the Shivering Isles list, but it's very outdated:
http://www.gamesas.com/?showtopic=729907&hl

I made a quest/house mod a while back:
http://www.tesnexus.com/downloads/file.php?id=20402

This overhaul was release very recently http://www.gamesas.com/index.php?/topic/1112992-relz-zutheskunks-shivering-isles-overhaul-v01/

Whoguru beat you to it

I never knew about the huge root tunnel one so I'm trying that one out.

I can't stand the root tunnels, lol. That mod sounds like a nightmare.

I don't know the root mod sounds really cool considering its a never ending dungeon


Noooooooooooooooooooooo