to a mod that MAJORLY expands Seyda Neen? I know there is one, but I do not recall the name. Thanks.

There's http://planetelderscrolls.gamespy.com/View.php?view=Mods.Detail&id=3701, but it has issues, and could use a little cleanup. (The broken guards saying "squeak", for example).

Few more http://www.mwmythicmods.com/SettlementExpansions.htm (which I really must get round to updating...)