When I think about it I don't think of Coulson being in charge. To me Coulson is Fury's go-to guy, kind of the Field person, whilst Maria runs the Helicarrier. For the TV show I just think it'd be a nice continuity to have him perhaps introducing us to the new characters, reminding us about Sitwell, that kind of thing. I don't know if he'll be a main character on the show. He's not my favourite character, but I'm fond of him.

Mind you, I also want Maria and Fury to show up, or be mentioned at least, and lots of Clint and Natasha rumours. And maybe five seconds of Clint and Natasha storming down a corridor covered in god knows what and everyone getting out of their way and groaning because what work have they made for everyone this time and... Yeah, I want all the things :D Coulson is just the start ;)