A simple Decesive Strike fix.
Ds is more like a 60 seconds god mode, instead of being the anti-tunneling perk. So i've came up with a very simple solution:
The moment survivor starts repeairing a generator, decesive strike will deactivate.
(By the word deactivate I don't mean that you won't be able to use it the next time you will get unhooked)
So, the main reason is, that survivor who has DS and gets unhooked, can carelessly hop on a generator, and start making progress without any stress, that killer can come any moment and down you, because you have this perk.
Do you agree? That's cool. Do you disagree? That's even better, because we can discuss about it in the comments.