I'd also love to see a "Rave Master" reboot, but I'm not sure it'd find itself with a large audience. Of course, Mashima's a much more prominent name in the industry now, than when the first anime was released, so I think his chances are better now than they were then.
If shaman king may have his remake 15 years later, despite the concerns he had for the end of the manga + poor sales. Rave master has no reason not to be entitled to its remake.
We are a lot to have been disappointed, already that there has not been a remake yet since the time + that for the 20 years of Rave, there has been nothing at all.
So I think maybe they're going to do EZ Season 1 and then take a break and do the Rave remake, and also do Heroes right after that.
Incidentally, that's a similar thing that happened with Fairy Tail; he intended it to be a lot shorter, but it proved popular, and he really enjoyed writing it, so he kept it going. Hey, not that I'm complaining, I love his work.
(if the 30 volumes was correct, then we're getting closer to what would've been the halfway point).
Basically yes he said 30 tome but 1 year later he said more than Rave 35 tome and less than FT 63 tome, so we had probably left for 50 tome.
After that if in the end he wants to do more than FT no problem but he will have to correct his errors immediately:
longer fights, slow down, make 2-3 arcs longer than that, make real transitions between arcs, etc.