Single Status Update
How hard would it be to implement a Tome of Power-like powerup in Doom? Would it require Decorate?
It would definitely require Decorate, but it wouldn't be hard. Decorate's powerups are universal, so you can create an item with the WeaponLevel2 powerup ability in Doom. You would need to manually create all of the "sister weapons" in Decorate, give all Doom weapons a SisterWeapon property that links it to the right powered version, and then the item would automatically switch each weapon when activated.