Although Vanity is still the current leader, he's been inactive for some time and hasn't posted in the roll call as far as I know.
Feng did mention that Aipom was nearly evolved. I would assume this mean he intends to have an Ambipom to use. As for Porygon2, I see no reason for this to be ineligible if he simply doesn't want to evolve it.
Porygon was once fully evolved. Then Porygon2 was once also.