One thing always bugged me about Glamour Prisms: Why five Grades for each type?

[Jacien]

They separated it like that originally so you couldn't glamour on gear that was above your level, so you couldn't do things like glamour on Ironworks gear to your level 20 character.

And you know how easy that would be to resolve it? The system would check if the level of the glamour gear is higher than the level of the original gear and go "Nope, can't do that. The base level of the chosen gear is higher than the gear you want to glamour. Glamour won't work".

EDIT: Actually it already does this lol. Tested with Level 45 Fingerless Raptorskin Gloves trying to Glamour Artisan's Mitts (Lv50, ilevel 60). They're both under "Grade 2" but because the gear level is higher it won't work.