you'd probably need a very clear dileneation of what is legit and isn't, could be a slippery slope that I don't think the triage nurse would want to make a call on. can you imagine saying you're gonna need to pay $200 or something, they'd need to be behind bulletproof glass
what they could do is what some places did during the pandemic is open up urgent care next to the ER to handle the overflow of "non-emergencies" and let the ER address actual emergencies.