So, why can't we have any amount of mastery pages?
Rune pages I can understand-- that's stuff you gotta purchase through IP. But masteries are accessible to everyone, and there's no real reason why there's a cap at 20.
I like having mastery pages for each individual champion I play-- because I find it that most of the time, I can't just make a single mastery page and say "This is for marksmen" because certain marksmen play better with different masteries. I can't make a page and say "This is for AP" when, again, specific skills are better for specific champions.
So why can't we have as many mastery pages as we so wish? Why only 20?