I don't mean to get anyone's hopes TOO high with "different gimmicks"; I just mean there will be a different flavor of the same general thing shown off here. I probably won't be changing the core mechanics too much, although they may be tweaked a bit to fit the situation, and there will probably be some smaller stuff unique to each mission.
Don't worry about burnout: I don't plan to plow into all this immediately. Like I said, should mostly be working on some extra content for this first release before I move on to anything else.
As for getting the word out, I'm gradually working my way outward, first on FA, now here, and probably something up on e621 before too long. That goes with the avoiding burnout though: I'm pacing myself. A full release everywhere at once would be a hell of a thing.