What’s the threshold? Who enforces it? Where is the “blood in the streets” now where there is no such restriction?
I’m not sure what your question is. I believe carrying a firearm while legally intoxicated should be subject to somewhat the same limitations as operating a motor vehicle while in the same condition. And for pretty much the same reasons.
Perhaps a party going out on the town could have both a “designated driver” and a “designated shooter.” Unless of course they could combine the roles in one person. :)