Idea for Camille E - Scaling Stun Time, Longer Wall Time (+Cool Thematic)

I had an idea for Camille's E that gives it quite a bit more depth, as well as adding to her thematic of waiting on Walls for the moment to strike.

My idea:

1. Increase the time she can stay on Walls from 1 second to 3 (or even 4)
2. Remove her ability to stun multiple targets (I don't know why this is even a thing)
3. Decrease the base stun duration from 1 second to 0.25.
4. Make it so the longer she stays on the wall, the longer the stun will get, up to a 1.25 second stun. (1 second or so of waiting on the Wall will increase the stun to it's maximum duration).

This way... -Camille can still catch up to targets or get a quick mid combat stun + attack speed buff, the later is just not as potent. -There is some counterplay as now opponents will have time to prepare to dodge the stun. -It rewards Camille players for taking the time to wait and then hit the target. -Smart Camille players will patiently wait on the Wall and then pop out of the fog of war to hit a powerful stun on a target (playing into her Thematic).

What do you guys think?