This game its really good, but a slight issue that i see, is that many crusaders are plain useless, so they are not worth even getting lvl 1(only level them for soft reset).

To counter this, i tough that a inactive crusader would share any of his upgrades with another one, so each crusader should have a slot that can receive a upgrade from another one, by dragging a skill to him.

If this change too much of the mechanic of the game, this should at last allow to share the active skills, so some of the skills can be actually used(because of crusaders that are useless later on, ie: King's Command, Alchemy).