Idea for likely upcoming offensive mastery changes.
The idea would be to have both brute force and mental force sections have an underside to them. So you can swivel each portion of the mastery to reveal its other option.
On the AD portion's front side you coul have: Either as is, or get 10 AD per level/@ level 18 and like 5.5 flat armor pen on the last point.
on back side you could have 10% critical Chance per level/@ level 18 with 4 flat attack damage on last point. Edit, Or:
update: Frenzy: 1st point +.34% crit chance and gain 1% attack speed + (.22% as per level) each auto, lasts 3 seconds, + 1 second at level 6 and 13. 2nd point .33% crit chance, frenzy can stack twice 3rd point .33% crit chance, gain a third stack
the 4th point would give 4% crit chance.
the current frenzy mastery would have to be changed to something else.
The same thing would be offered on the back of the ability power side. Back side might give magic pen per level with say 2.5 flat cdr on last point.
the idea of offering critical chance in the masteries makes more sense if you read this: http://www.reddit.com/r/leagueoflegends/comments/3a3pva/a_qol_crit_chance_ideachange/
attached picture of how the swiveling would look. the slider would have a tooltip when you hover over it, letting you know whats on other side making it more intuitive.
kind of like a revolving door or those secret wall doors you see in movies.