About the number of mastery pages.

Would it be possible for the number of mastery pages to increase?Say,from 20 to 25?

I play mainly Jax top.Currently i'm using 3 mastery pages for Jax only.I also play jungle and support(a lot).So,all mastery pages are full because simply i got a fair champion's pool for all 3 roles(but it's not enough).

I would like to add 2 more champions for top lane but i've got no more mastery pages to use.Changing them before every game is simply a pain to deal with.As we get more Champions and changes in meta,demands for changes in champion's pool are increased as well.(for me at least).

Adding 5 mastery pages should be nice i think.