ScottC12

if you need the mace itself, it's in the LOTR Weapons =Collection mod @ http://skyrim.nexusmods.com/mods/5727 My player ran across Sauron and his mace in a nasty place -- it is not super-sized or over-powered, but I suppose a player with high Enchanting could enchant it further.

It may not be as ambitious as what you are looking for, but the mod Helgen Reborn provides many hours of entertainment. It has new armor, rebuilds the town, including the inn, has several new NPCs (at least one can be made a follower, in the latest version), and several quests that rebuild the town and establish the town guard. I have not played the mod all the way through it yet, so I do not know if my player will end up as a Jarl or mayor, but my player did get a nice rebuilt keep in Helgen (it was a fixer-upper), so far, for his efforts. http://skyrim.nexusmods.com/mods/35841 At the very least, Helgen will no longer be a pain to travel through, since it gets rid of the town's perpetually respawning bandits.

From it's description, it sounds like the new Civil War Overhaul mod may be what you seek. I haven't downloaded it yet, but the writeup is a hoot: http://skyrim.nexusmods.com/mods/37216/

Do you mean like RTS for Skyrim? http://skyrim.nexusmods.com/mods/12683