A suggestion for Galio
Only listing the changes, if something isn't listed here it stays as is
W - Added, resets auto timer and next auto will deal 5-10% of targets max health as magic damage and restore 10% max mana, 30% mana restored vs champions and large monsters.
E - now slows enemies that move towards the point of cast, 25 unit knock back
This should allow him to sustain his mana better throughout the game, give him some tools for top lane, which is a workable spot for him, should also help with last hits. The E change is a buff to his role as a disengage tank.