The thing about Peggy Carter though is that it can't hold onto it for that long as it dosen't really go any where The Black Widow story was told to us mainly because the films hasn't touched on it much as there has been no Black Widow film. They are limited because of events already told to us by films set in the present. They are more restricted which makes them think more about what they write. I liked the fact they came up with a plot about finding Starks weapons and he's made to look like a traitor to the US then just focusing on something like Hydra straight away

Honestly like I've said they should have waited for Cobie Smulders to finish HIMYM and make it so the show is focused around the pair as they look into high level cases. A job suitable for Coulson so he gets back into the game after bring him back. Maria is tasked by Fury to watch over him but they make it look like she was demoted to Coulsons level so they had a reason to work together.

X-Files style. Instead of filling the show with regulars straight away they would have a lot of guest stars for the story/case of the week and then for Season 2 they could see who the audience reacted well with the most to have them feature in more episodes.

It would of felt more like Agents of Shield then what we got.