I’m converting this module to D@W for giggles, and it’s got all sorts of weird units in it. This is more thinking out loud and garnering opinion on a particularly vexing one:
A unit of Ghost Lions.
Putting aside for the moment the ridiculous cost of such a unit:
During a siege, then, this unit doesn’t need a breach to make an assault.
Unless it’s handlers (clerics of sufficient level) are able to also become incorporeal, this unit, once sent in for an assault, is effectively off-leash, and out of control.
And since it’s undead, it’s gonna take out every mortal it finds as it wanders through the stronghold - perhaps for a number of turns/rounds dependent on the SHP of the stronghold, it makes an attack on a different defending unit each turn.
At the end of that time period, it is treated as having routed, and is removed from play. If the previous controllers of the unit fail an initial Turn Undead check (at some penalty?) to bring the remainder that come back under control, portions of the unit attack their previous allies, doing a number of attacks equal to (quarter? third? half?) the number of attacks they performed while inside the stronghold.
So that seems fun? An uncontrollable animal-intelligence ghost bomb?