I agree Brighton never feels crowded especially on snake, gw, and Milly. I think it is because there are more intermediates and park rats that stick to crest/majestic. I think snowbird feels crowded because more people there a pretty good big mountain pow skiers, that all want to ski the same terrain, attack the mountain In a similar fashion, and are in the "know" about what gates are opening next.
As far as deer valley that 7500 is actually not a hard number. I had this conversation with one of the upstairs managers the other day. They let more than that in on Christmas day this year. It all depends on conditions. On a warm blue bird day they let a lot in, they say because the restaurant capacity is much larger when folks are willing to eat outside. Thus they actually limit more strigently on days it is dumping, which is great!