What's the point of spiritbond gear if the gear isn't convertible?

[Eydaos]

I'd like to see some adjustment to this, actually. Make fully spiritbonded gear contribute something, something more than non-spiritbonded gear.

Maybe this is how they could implement those often (or at least sometimes) asked for "bonus to skill" stats to provide variety? Once you get to 100% spiritbond, the gear acquires its skill/spell/trait bonus.

This is something i always thought would improve gear. Not only would adding some kind of SB bonus, it might keep the materia market less flooded as people might not convert as readily if they knew that newly SBed item is giving them an added stat bonus of some kind.