My suggestions :
1, mordor need warg riders , because they have ( like in the movie )
2, Need a wall around mordor's castle like angmar (at start of the game avaible choose whitch type (like the dwarfs )
3,some new orc captains in the heroes who's there ( minas thirith's siege )
4, mordors avarage orck need to be replace with morgul or gorgoroth or dol goldur or cirit ungol orck ( it an update in the citadel the update's ty decide whitch type of units will be avaible like dwarfs )
5,mordor's archers like morgul or dol gordul need to be bigger range
6, in the outposts menu ( strongholds need to be replaced some type of strong economic bulding like isengard ( some type of big mine or mine network ) and another bulding where mordor can train easterling and etc ) ( raise the price of orcs )
in mordor was much larger mines than in isengard and much more resources and more potential to create some new dewasteting weapon or bigger economic bulding or weapon than isengard , because mordor armor much more orcs than isengard , mordo has almost unlimited resources , I read this in posts about Isengard vs Mordor !
I really like this mode , so I hope it could be better than ever !
I'm waiting 4.5
For this time that's all !
I hope we can talk soon,