Proper way to rework Yasuo
You don't. It's already bad enough you are changing him for the lower elo of the game, that right after admitting he trails behind other champions and state that only the people who put in the effort are good with him and will be rewarded by having their time wasted. The way this is inevitably going to go down is;
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You don't change much, he remains awesome, but the unskilled players of this game come on to still complain. He will remain banned, hated, and never see play either way because who would have thought adding more bans to the game would cause the mob mentally of "we don't like it so it has to go" to take place.
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You fuck up and you fuck up really bad. He ends up another failed rework, of which only WW was a success, and he ends up clunky, useless, under performing, and with you ruining the best champion this game offers. He has the smoothest kit. He is probably the most loved champion, don't let the boards fool you, he is the most loved.
Basically you fail either way. The only thing this will amount to is you screwing over committed Yasuo players. Me personally? I hope you fuck him up and become super fucking hated. That is what you really deserve for literally going against your own words of not changing champions around low elo.
and have insane speed with it. Adding to that the pre-reworked
and you have someone who is a mage adc who busts you with the speed of an adc. He had no counter play. His turrets/soldiers weren't kill-able. He had enormousness range and was very versatile. He was near unbeatable.