Possible Ezreal Change

What if Ezreal's W applied a mark on to enemies that made it so Ezreals next Q would deal extra damage? Similar to lux's passive, but make it so it can't be detonated by auto attacks. That way it rewards good Ezreal players for hitting two skill shots in a row, and makes the w a lot more useful. It would also make for some interesting gameplay. I don't know what the scaling would be, it's all just a thought I had.

Thoughts?