I would actually prefer they stick with consumables (like say charges of your phantom actions that require a consumable to recharge similar to RuneScapes armour degradation system)

Reason being if you think about the content design of Bozja there is a huge amount of auxiliary content and demand driven by the fact that lost actions are limited. Cluster farms, star mobs, sprite reflection, desire to save prisoners in CLL, doing dal at all. All are driven by desire to gain more fragments to either use or sell. If the actions were permanent unlock you only need to get once then basically all of bozja’s auxiliary systems besides the core skirmish->CE->duel would fall away and make the experience way worse

They might be able to get away with runescape’s bronzeman/ironman system if they wanted them to be permanent unlocks. Basically they are permanent but YOU have to get them yourself and they have complex unlock systems (like say to unlock phantom WHM ultimate action you need to level phantom SCH, AST, GEO, SGE, CHM and BRD to at least level 15) but even that encourages the “solo-ation” of an MMO like RuneScapes Ironman system does