I was going to make a new thread, but I see the idea was already floated here: make a dummy unit that sits above HARMS
This unit would only be targetable by units that have sufficient splash damage to hurt the harms underneath
That way, units like battleships would automatically target the HARMS even without player input, and they could easily be given orders to target HARMS. Strat bombers, missile cruisers, etc. would have an easier time killing HARMS without the APM cost.
But obviously it wouldn't be targetable by things like: torpedoes, depth charges, guns with no splash, guns with not enough splash radius