I think Tein should be added in 1.3. We all know he really wansnt too important in DBZ but some of his moves were really good. Tri beam is one of my favorite attacks in the whole series. You could easily add him to ESF. Other then the basic energy attacks, just give him Regeneration, Solar Flare, Tri Beam, and for his final attack, just give him that one beam attack that he tried to kill Nappa with in episode #019.