#1
That sounds like a "them" problem, not a "me" problem. TS. I'm not bailing players out.
If we're going to do #2, then you should just never use the blanket UNS, because that's really what you're doing.
What if #40 was getting a drink on the sideline for the blanket UNS, his first, then gets flagged for spiking the ball? Why does the timing of his "personal" UNS matter? Why does his actions during the blanket UNS matter?