I'm all for it, but it's not going to be on a list of things to do for a long time. If we as players could somehow give them a properly designed job, programming aside, on a silver platter, only then might it actually push forward development (assuming that job or its niche is already scheduled for development...). Otherwise this will just be players lacking things to do ingame or otherwise passing around ideas for fun. I'd join you for that, of course, but frankly there's not much here for me to comment on.

The closest match for this spell-sword DoM-tank type would probably be a Mystic Knight, Rune Fencer, or Necromancer. Only the last of that list would really be much of a DoM though, and certainly the only one that could be made to carry a scythe...