What would you like to kill in mordor?.... You hunt orcs....

The only logical thing they could have added would be more of a variety of orcs, a more variety of weapons for them and special abilities.

Or a multiplayer.

If there was a multiplayer, I would only want a coop, not Pvp and the game would have to be significantly harder.

More weapons and a variety of Orc breeds would have been nice. Online co op would have been a nice addition as well.

I just get more of a sense of repetitiveness with this game

sure it could have improvements
but its for sure a step in the right direction