At level 99, they should make it possible to merge two elemental weapons of the same name, but different stats, into a single weapon. This sounds realistic enough to apply for all elemental weapon trials but not physical.
I have been secretly hoping that this is the way the magian trials will end at Lvl99.
Lv95 - [Surya's Staff +3]
"Cure Potency" + 23
Plus +
Lv95 - [Surya's Staff +3]
Light Affinity: Magic Accuracy +7
Light Affinity: Recast Time -15%
Light Affinity: Recast Time -15%
(no magic attack)
Equals =
Lv99 - [Carbuncle's Staff]
Cure Potency + 23
Light Affinity: Magic Accuracy +7
Light Affinity: Recast Time -15%