That sounds pretty cool, I'll have to check it out.
I get a little frustrated with the limitations of the MA but then I have to remind myself how old it really is. And to my recollection it's the first Player Mission Builder in an MMO. (if I'm wrong, let me know) . Nort that I think these games are good, but I only played Neverwinter and Star Trek Online because of the ability to build missions. Once they took those out...well, I haven't really played either of those games that much since. And Neverwinter had an excellent MA. You could move items in 3D on an axis and have dialogue in mission with characters.
IMO Champions Online really missed the mark by not building one in their game. They already lack a diversity of missions so having players make their own to share would only make the game more expansive. I guess without Homecoming the only hope is if City of Titans has an MA if it EVER gets done. At this point I'm thinking I'll be too old to care by the time they release that game, if ever. (and I'm already old...like AARP old).
Sorry for the rant. It's late and us old people get grumpy when we're tired. 😉