Materia on all gear.. Why not?

[Akuun]

3. Balance -- Adding it to even raid gear would be overpowering and pretty much kills the need for synthesis gear.

This is exactly why they should, right now there is really no reason for players to bother with coffer gear because it is so terrible compared to crafted items with 1 materia. If only crafted gear can be made into materia, then players will still by the crap that people craft.
Sorry, but I don't think crafting should dominate the game.