To answer your child post. There is SMITE a third person MOBA. First person MOBA wouldn't work as well because you couldn't see your character do the cool move.
I wonder if there are any FPS-adaptions of MOBA/ARTS/DOTA? Maybe a Call of Duty/Left for Dead/Quake mod?
Look up 'Monday Night Combat'. Devs like to experiment by mixing and matching genres, so in my experience things like this often exist somewhere. It was a pretty average game, but the idea is sound.
http://www.savagexr.com
It's a RTSS Real Time Strategy Shooter sort of thing. It's an FPS game that is sort of like a strategy. Not really any of those, but sort of close.
IMO, that's really what makes DOTA/clones uninteresting to me - an interesting and strategic action game saddled with a non-relevant RTS interface.