Personally, I would like the option to see Statesman as the contact for the STF in Independence.
Implementing it in a way that those who prefer Ms. Liberty can have Ms. Liberty, perfect. If it can be done with phasing, awesome; if it has to be done via Ouroboros, that's fine.
It just feels odd missing the archetypal "red, white, and blue" hero because of the existence of iconic characters like Captain America, Superman, Optimus Prime, All-Might, and ... well ... Statesman.
I don't really know of Jack Emmert aside from him being an early dev for COH and leaving for CO so, to me, Statesman has only ever been the NPC - not the avatar. Same with Sister Psyche.
It looks like people have had notably negative experiences with Jack, though, so it's understandable for them to want characters in the game that are distinctly his creations to be gone.