I confirm that's extremly unfair.
Some cases :
- Classes that don't need pink fuse : you can simply switch freely from a fused badge to another (all pve & pvp spec) except the fused pink badges
- Classes requiring pink fuse :
* you already have a fused badge : you need another ton of expensive ressources to get a fused pink badge at same level (basicaly pay twice)
* it's your first fused badge : you can switch freely from a fused badge to another BUT can't return to a pink fused badge (so you're locked to pink fused badge, you can't test/use the other pve/pvp spec without loosing it)