Not really. I can think of a VERY good all female Fighters Pass but I don't think it'll happen.
Lara Croft, Morrigan Aensland, Jill Valentine, Joanna Dark, Reimu, KOS-MOS, Kasumi, Mai, and 2B off of the top of my head. All from different franchises, all with the potential to be unique.
But I gotta be honest with you I don't think the Smash team is looking at the characters as having to fill in a certain criteria. By all means if we get a whole Fighters Pass of Female Fighters, awesome! But I doubt it. I really do. I'm iffy on this last, single character being female anyways, let alone the whole next Pass. The only, the ONLY character I can see actually happening for this last character from the list above is KOS-MOS.
Morrigan is overtly sexualized, Lara or 2B would be the second Square character in the Pass and I don't see that happening, Joanna Dark is Microsoft and I don't see them getting doubles after Banjo-Kazooie, Reimu is incredibly obscure world wide and isn't the only possible choice from her series, Kasumi will probably only follow after Hayabusa if I had to guess, Mai would follow RIGHT after another Fatal Fury character in Terry which seems doubtful, and Jill has competition with Chris AND Leon. KOS-MOS stands out because she's Namco, from a franchise Nintendo has ties with internally, and is one of Namco-Bandai's go to crossover characters.
We'll see but I don't want you to be too upset if this outcome is the case.