I don’t think messing with overheating is a good option.
Either it is too strong when you can overheat enemy modules (which can break all of their modules and fit) or your effect does nothing if the enemy can stop using overheat to ignore your effect, which also isn’t fun interesting gameplay for either of the players.
Messing with enemy overheating → no support.
I like your other idea better, to mess with enemy minds, play tricks and create traps with gameplay mechanics, in this case with dscan.
I once had a similar idea that allowed tricking enemies ( New ship type: CLONE DESTROYER ) and I do believe the game could become more fun if players got more tools to trick other players.