Fran's right, except I'm not sure the arguments against slow are more along the lines of "overlaps with 2 existing glyphs" than power considerations. These discussions always sort of spin out of controll
Bottom line, the way I see it, is that popcorn's too valuable to waste, and a couple of things are possibly too limited in availability and various guys see need for various things with some degree of overlap.
I'd love it if the devs decided to clue us in on what they think about the glyph and what's their line of reasoning for or against various suggestions - I guess that would be educational even if whatever they do to IMAWAL turns out something us guys could never come up with. Although I don't feel entitled to anything, because the server probably killed some of their will to live and I guess they need more support than pulling on sleeves right now...