Yasuo's rework maybe?

Yasuo's passive : Way of the wanderer Let's scrap the old passive with that shield and double crit chance and we'll get another one. Yasuo's Q and W ability cost a portion of his flow. His flow no longer gives him a shield, he instead has 50 flow at level 1(no scaling per level) and his abilities(Q,W and R cost flow). Moving x teemos grants him x flow.

Yasuo's Q : Steel Tempest Cooldown and damage related stuff stays the same, BUT Yasuo's Steel Tempest costs 20 for the first 2 casts and 30 for the whirlwind.

Yasuo's W : Wind Tehnique(entirely new ability, scrap that windwall it's just too much for a dps fighter, it's name can be changed ofc) Passive : Yasuo cannot critticaly strike without this ability. Also, his critical strikes cost X flow and have a special animation(a gust of wind or whatever). His critical strikes deal 150%/160%/170%/180% of his total attack damage, based on this ability's level. Leveling this ability gives him 12,5/25/37.5/50 extra flow. When his Q critticaly strikes it doesn't cost any extra flow, but it can't critticaly strike without this ability. Yasuo gets up to 50% critical chance based on his flow(percentage, scaling with the level of his ability or whatever, just nerf his early game power so that he's more challenging but more rewarding to play) Active: Yasuo gets a shield for X seconds for an X% of his actual flow, reducing his flow to 0.

Yasuo's E: Sweeping Blade Core ability, I don't really think this should be tweaked, maybe adjust it's damage or make it's damage scale up from multiple dashes.

Yasuo's R: Last Breath Same stuff, gives yasuo a shield based on his flow, BUT gets his flow to 0 and no longer gives him % armor pen, instead bonus attack speed or max flow or lifesteal or whatever IDK something cool.

Any opinions? Don't flame me when you see which division i finished in last season, also english is not my native language so yeah