to get a razor queen, put it on hardcore and do a small nest. leave 5 glooples left in the nest and eventually a queen or razor queen will eventually appear. and you can tell that a nest has a razor queen if the nest has more biters than usual.
max stamina should go up by 1 about every 4 levels. that way you can get more enjoyment out of the game and energy drinks would be more valuable, causing more people to buy them with tokens.
Since the developers home is kongregate, the only locked content is a badge. If it was armor games, the game would say "go to armor games to play level 2 and up."