Speaking for myself, I'd have put Maria Hill in her own TV show, that tracked the spaces between the movies. I know she appeared in Agents of S.H.I.E.L.D (which started off in that space), and also in the Disney+ Secret Invasion (the less spoken of that, the better), but I'd focus on the dealings with people and the resolution of situations, the way that S.H.I.E.L.D probably did when they weren't running around cleaning up after superheroes, and it would be specific to Maria who clearly had a lot of history there to have developed her capabilities, and plenty of connections who could be brought in and out.
Kind of like a spy series, but where it focused less on the fieldwork and more on the operations/logistics side of things.
Maria Hill: Where The Bodies Are Buried
Kind of like a spy series, but where it focused less on the fieldwork and more on the operations/logistics side of things.