If you are going to nerf the vex, as we now know you are (for some reason…), this is how you do it:
Adjust it’s range slightly, NOTHING else.
In PvP, you could also adjust the kills needed for the LF-mode from 2-3, but leave the rest of the gun as is, please.
The TTK is not the problem, many other weapons kill faster - while not having to stay committed, as you must with the Vex.
I understand that it’s reach might be a bit off, but rain it in at most 1-2 meters.
Don’t repeat your previous mistakes of “raining it in slightly” and then nerfing it into oblivion. This is the most fun I’ve had with a primary exotic ever in D2. It’s versatile, nostalgic, actually good etc. If you destroy it as you’ve done with maaaany other guns - the meta will go back to “lol just use exotic heavies” in a heartbeat.