i'd be okay with her as teacher/trainer at this point, or even a younger alternate universe version (i guess :/) since Maria Hill got the shaft.
i just always wondered early on in AoS when it mirrored the movies at the time, why she was such an infamous member of SHIELD but none of her missions/accolades were ever mentioned. would've been a nice nod.
however in later years the show seemed to heavily deviate and do its own thing, maybe it's on universe? i don't think i ever finished the show now that i think of it, so i don't know how it wrapped up, what universe it is in etc