What if Outposts debuffed enemy units while they were within its LOS?

Crazy idea here so bear with me. I've been up since 5am yesterday and I hadn't had coffee so it feels like there's humidity in my brain.

Outposts. You and I know them as the most useless thing to ever grace the game. Their primary purpose seems to be either something to give you LOS in scenarios or something that looks nice in eye candy builds.

But what if we made them do something? Something worth the five stone they cost to make?

I present an idea: Have outposts debuff enemy ranged units who are in their LOS. Not something major, mind you; perhaps lower their attack by 1 OR make them take +1 extra damage from any of your units or buildings while they are in the vicinity. The effect doesn't stack.

Discuss if this is crazy or just plain unethical.