I'm emptying my retainers, and one of them has plenty of now deprecated materia.
Instead of throwing them away I might as well try my luck, but the interface to do so is horrendous:
  • I have to manually select 5 materia, and if I select a stack of > 2 I have a confirmation dialog each time
  • I can't multi-select a large amount of materia, which means I'm currently sitting here clicking on materia