1. add a new guild for example like a hunting guild where you hunt the rarest beasts, animals, creature in the game for very good rewards.
2. add in a player owned shop/business where you have to provide yourself with your own goods/stock by acquiring them through hunting, gathering or purchasing them from other sources.
3. add in where your the leader/king of legion for example like your own castle where you control everything who trades there, prices of tax, and your soldiers.
4. and the final thing maybe something to do with the falmor like a new quest line.
might be much to ask but this would enhance the game play of many players.