Hope so!
The sheath concept being reworked for a 16th class would have the benefit at least of sidestepping entirely the sigh-inevitable “omg sheath was better than this” should they start designing some other ability. Needn’t necessarily be same graphics, or be for a katana class, though it does have good synergy with heavy armour so maybe it could be the first ability for a 7th weapon type (axe?) as that’d open more possibilities for other loot, too, rather than keeping on overloading the existing weapons with more UTs.
It was one of the original Wild Shadow design fundamentals that the game doesn’t enforceably split up friends based on things like their character/rank so I wouldn’t like to see them go down this route.