I have an idea about a new type weapons.
Similar to that types what is only usable 1-3 times in a match.
The new thing is this new weapons need to cooldown after use.
2-3 rounds or even 1-3 shutdown(!!!).
They can be very powerful weapons because they are unable to use permanently cause their cooldown.

Yes, good idea which has already been proposed.
The problem is the current weapon system does not yet support this feature so it wont come very soon.