Support to the re-edit; it seems a lot more logical and i think it would be great! Only problem is what if it has the same structure as /c so challenge duping is possible and if that is the case how can that be stopped with /spawner?
here's an easier way.... step 1 - open the silkspawner plugin step 2 change this "silkspawners.changetypewithegg.<creaturetype> (op)" to this "silkspawners.changetypewithegg.<creaturetype> (true)"