Cards on the table this is a suggestion i have a vested interest in by playing a werewolf.
I would like to see metaline as one of the special materials available for creatures weapons at the npc creature weapon enchanter in the gymnasium.
Creatures only have 1 set of weapons so it isnt possible to have an adamantine set, a cold iron set and a silver set etc. Metaline would be a nice option if possible.
The problem here is that unlike just about everything else, metalline makes use of tag-based script and the "Unique Power" toolset on use property. Applying this would require making a separate metalline version of every creature weapon in the game. A lot of work for little return, unfortunately.
Depends on the creature. For weaker creature weapons IMO the only viable way is to have something which offers you fang of balance or else you will lose a ton of dmg to DR's. Medium dragon for instance i would classify as one of these weapon creatures.
