I've played a lot of Galio. I like him, but I feel like his kit is broken for a tank. It doesn't make sense. Why does a tank need 2 aoe damage spells? (3 counting ult) Sure, they slow/speed up, but this seems like a kit for an AP carry. His shield is just mediocre all around. Bulwark is not going to save someone in a life or death situation, unlike many other shields/buff abilities. Even the speed boost from kayle's heal alone has a better chance of keeping your teammate alive than Bulwark does. If I could change one thing about Galio it would be to rework Bulwark as either a shield that absorbs a small amount of damage, or gives the shielded ally a "randuin" effect where physical attacks slow the attacker.