they had a poll about their next future game theme some time ago. patrons didn't go for what cBob would prefer, back then, and ever since there was no decision for their next. patrons casted down his favourite choice (if memory serves) and if a writer can't get along with what he is told to write about, very likely he won't do it. now, since cBob is (on paper) the head of MiTy, he'll be in on the decision whatever whenever they do. Marty is (on paper) a hired artist for one project, which is FET; the 18titans is still his side project. they became close while working on FET, basically learning to create a game while creating the game, and maybe they grown friends during that time. it's those two people, and it's unlikely they would have more on any future project.
the Omnitrixxx (playable, partial done) game was kind of a study to see how it would work out and how pieces would fit together, i'd say that was the most promising 'possibly next' thing they did as MiTy, but looks like it won't be continued, as for now.
with patrons being what they are, they would possibly insist on having theirs and not what MiTy would maybe be able to create, so i wouldn't expect any 'next' for a time being. so here we are, with Marty filling into FET what he thinks still should be done, and Marty having his (still his, yes) side project 18titans, and nothing visibly 'expect this next' at all from the team. it won't be, until cBob found his balance, and a something he can work on. given his breakdown and following rather fragile stability, there's no telling which and when, or even if, ever.
*edit* found a typo. now it's MINE.