RTS/RPG Games. Do they exist?

I mean RTS games with RPG elements. And not the "dynasty" type thing games like Crusader Kings has.

I have very fond memories of playing Age Of Empires 2 as a kid. It felt like you're playing a king managing his country - and you forged alliances with and fought with other famous kings in history! The RPG elements were only choosing your civilization and name but I still loved it.

I want that kind of game - maybe with more interaction between the "players" - more diplomacy, fighting common enemies, trading, sharing resources etc and customizing your civilization as you develop it.

So far, I've found Rise Of Nations and Age Of Mythology. Both are really good games too. I love choosing you "Gods" are you progress in AoM and getting superpowers. But neither of the games have any of the "diplomacy" I want.

So, any suggestions?