Galio Remake
I had a thought for a Galio Remake that wold make him viable, and even played often.
So instead of his current passive, it would be replaced by a spell shield that blocks one source of crowd control. It would recharge every 30 seconds, but each time he is hit, the cooldown goes down by 1 second. (2 seconds if hit by an enemy champion.)
His Q and W are fine, and are pretty much essential to him.
But for his E, he now dashes forward half the distance of his current E, then, if he collides with the enemy, pulling them forward with him for the rest of the current E range. Then, the allied speed boost is created. If he doesn't hit an enemy, the speed boost is shorter.
This could help him with his problems that most people who play Galio have.
Then, for his ult, I would give it a passive that convert 5% of damage taken into AP for 1.5 seconds, so he can fulfill his role of a guardian because he can take shots and give some back.