Two potential fixes to the nuke...without actually removing or fixing the nuke itself.

I'll be the first one to admit it. I love nukes, and I feel like the ability to attach explosives to throwables and send them skyrocketing towards an enemy team is quintessentially part of the sandbox philosophy of this game. But I will also admit that, in their current state, they can be too OP without a reliable counterplay. So here are two options to fix the nuke, without removing them or actually outright nerfing them:

Option 1: reduce the amount of bullets that it takes to make a carriable break/explode. This means that if you see a heavy carrying a new you could aim and hit whatever canister they are carrying and in 1-2 hits it should explode killing them. This will reward players who pay attention to their surroundings and make the nuke into a high risk high reward tool.

Option 2: any throwable being carried by your character gets automatically dropped to the ground if your character takes damage. This way just shooting at an heavy carrying a new will make them drop the canister with c4 to the ground.