I think I will actually miss the Covenant.
Even though the Covenant divided into two factions, the Covenant Loyalists were still good enough for me. I hope the Brutes will return at some point and the Arbiter!
[Edited on 10.14.2012 5:31 AM PDT]
-
Apparently the Storm behave a bit differently to the Covenant in terms of AI, and there's the obvious visual differences. Far less refined.