I never understood the scout limit and also nominate a sniper limit at least for easy sniper maps like deathfacility, manncohq and harukeishrine. The best scout I've ever seen on a vsh server and I MEAN it, did 2.400 damage whereas totally clueless snipers such as myself can do 2,000 damage on a bad round and good snipers can routinely pick up 6.000+ damage on sniper biased maps. Scouts are annoying, but once you catche them they drop like flies. Ditto on the spy limit, I've seen rushes of 10 spies where they just surrounded him and got half a dozen backstabs because as fast as he could take them out there was always another spy at Hale's back.