I was becoming pretty jaded on the X-Books. Mutants were everywhere, and of course in order to show they were mutants the writers/artists were obliged to make them freakish so that when you looked at a panel set in Xavier's, you know that the dozen kids you saw in the picture were mutants. One freakish looking mutant is angst and drama. Two hundred of them in the same school... boring. And of course they had to think outside the box to give all of these mutants powers that would make them stand out. Sorry, the guy that generates sentient mucous isn't really an interesting story.
Well, with Decimation the mutant population went from millions to around 200.
To quotes Burns: "Exxxxcellent".