Seven of Nine, Ideal Candidate is reigniting love for fifty point missions. She is a bearer of the Think Tank keyword and the only affiliated one. Also, she came out long enough to see how that keyword played out to make her better. The Think Tank like fifty point missions and they can go with anyone. Even Borg, though that takes a bit of work to do.
You know the obvious candidates for Fifty Pointers; TNG, TOS, Klingons, Borg. The obvious candidates are out there but what about the underdogs.
What affiliation has a viable but not clear cut way to solve fifty pointers? Who can you make a case for even in theory being able to go this path? Is there a deck you considered for even a few seconds but then thought against it? What was the reason for that?