New weapon options: Cloak. and Decloak.

Cloak.Duration=75 would give the target unit the cloak ability for 75 frames (unless they already have it for longer than that).

Cloak.Duration=0 would give the target unit the cloak ability permanently.

Decloak.Duration=75 would remove 75 frames' worth of cloak life from the target unit.

Decloak.Duration=0 would remove the cloak ability from the target unit permenently.

Cloak.DecloakToFire=no - while under the effects of a *limited* cloak-life, the unit will not decloak whilst firing, regardless of the weapon fired.

This could also be attached to an any-weapon super weapon with a cellspread such that you have a Cloak superweapon (e.g. CellSpread=2, AffectsAllies=yes gives you a new 3x3 minor SW like the Iron Curtain).