well, there are a few other jehuty type orbital frames as well, i think one was called idolo or something like that, im sure there was at least 2 other dvds as well,
the ones from the dvd movies of ZOE, they could resume the story there, (i forget the ending of ZOE2 its been awhile since i played that)
ZOE was my avorite game, ZOE2 wasnt as good IMO, (until that huge sequence with literally hundreds of enemies whn you fighting alongside leo and those other mechs)
it would be cool to make another one, ubt there really wasnt an opening for anothr one lik ethere was in the first one
as for dead or alive, it had a great graphocs engine, but there was no good gamepley in it, i think itd be best f they let the xbox have it, its dying anyways