Regarding the Question: What could be added to BFME3?

There is soooo much more that could be added.

What they would need to do is make it a prequel. This way, there could be different types of Elves (i.e. Sindar, Noldor, Edlar etc) as well the Dunedein, the three houses of men. And that preface could follow the true history of middle earth to some extent because they did fight each other from time to time. The main reason this would be so much better is because these elves were much stronger.

Accordingly the heros could be MUCH more expansive. Beren, Beleg Strongbow, Ongoliant, Turin, Feanor, Huan (would be sick!) and so on?!?! Obviously Feanor would defeat pretty much everyone (he did take on multiple Balrogs at the same time) so they would need to put a handicap and allow men to have more potiential command points and better structures etc.

Also, powers could make use of the Valar, Gothmog (King of Balrogs), which is a no-brainer. And/or, instead of getting the ring to return to your fortress, you bring back a Silmaril and you can summon Morgoth or Finwe.

EA, please do it!!!