What mains have you never played with? I'm not talking about a specific version of a main just a main that you have never used. For example, have you never used a Jean-Luc Picard or has Travis Mayweather yet to grace your deck?
Also being clear, open credit regulars only.
There are a lot of versions of mains out there, including some that span several affiliations and several uses in several decks. They have abilities that have common themes and can help enhance a decktype.
Let us know which one you just haven't used and let us know why.