I do not believe they should give them anything. I think if only 1 guy turns up for that class, then he can lift, but there is no competition for that weight class. Eligible only for records or whatever. No medals.
Ive competed in two gpc comps where i was one of only two lifters in my weight class. Took the silver both times, but they are not medals i think i should have received, and it sucks walking up on stage to get them if i am honest. In that situation there should only be a gold.
The only comp ive entered where i felt good about a win was a novice comp where by i took home the highest total for the day by 2.5kg, the highest squat, and the highest deadlift, and third on coefficient, out of 25-30 lifters. That one felt better than any false placing.