You are nerfing Aurelion Sol more then buffing him

I have played 700~ games of Aurelion sol in ranked at least and from those games i rarely ever need the extra 10 seconds off my ult rather the 1% nerf on celerity movement speed is in my opinion a more drastic change. This nerf will most likely drop Asol's winrate even harder. One of the reasons why sol is failing in this meta is because phase rush was nothing like stormraiders and Sol can no longer compete with champions like ahri and zed and is out maneuvered easily.

A easy way to fix these problems would be to buff Phase rush, give it slow resistance and an increased duration to better position ones-self. Another large problem aside from the runes is Aurelion sol, unless fed is a DOT champion and with the burst meta he suffers, an increased Q stun duration or more damage on W would bring Sol back to his former glory.

Sincerely a worried Sol main rito please help my champion.

Edit:Just to show the drastic change of the "Keystone"

Phase rush Applying 3 stacks to a target within a 3 second period grants you 15% - 40% (based on level) movement speed for 3 seconds.

Stormraider's Surge Dealing 30% of a champion's maximum health within 2.5 seconds grants you 40% bonus movement speed and 75% Slow Resist for 3 seconds.

Huge difference, losing the 75% slow resistance and 25% movement speed dropped his winrate 4% :(.