I have been summoned from the great depths, resurrected for the battle the last round will bring forth, both on the PS4, but also on the master race! And It shall be glorious, I have no doubt.
As for Ein, my main issue with him is that I feel his identity has slowly been slipping away. He used to be one of those characters that felt really fast and "I'm going to rush you down with superior speed", somewhat similar to what Kokoro or Christie represents today. In the void of his disappearance, other characters has risen to take his place, and now he remains a shell of his former identity.
I think the only hope he has for the future is to be come a Kokoro/Gen Fu/Pai/Fast char clone only with different animations. It is the only economical solution I see happening for him as TN doesn't seem to believe he is important enough to be made relevant.