The mastery pages needs a improvement.
I'm sorry my English is poor.
The are only 20 mastery pages and I can't even exchange the position of them.
In season 4,The masteries is much more complex than it in season 3 for new offence masteries as Spell Weaving,Blade Weaving and even the Feast.To fit different champions,we need edit many different masteries,even for a same position.And even the same champion need different masteries in defferent map(Summoner's Rift,Howling Abyss).
For example,in Summoner's Rift, I choose masteries(21-9-0) with Frenzy for Caitlyn,(21-9-0) with Spell Weaving for Sivir and (21-9-0) with both Spell Weaving and Blade Weaving for Ezreal.
Also,in the mid line,I choose (21-0-9) with Feast and Spell Weaving for Orianna,because she needs amount of time to farm and her Clockwork Windup.But when I pick Gragas,these two masteries seem irrelevant.If in Howling Abyss,I would like to move the 9 utility masteries to defense masteries,because there isn't any buff.
And for different tanks,supports and fighters,for Ryze,for some personal preferences,I think we need a new mastery page system to solve this problem.