A better change to Taliyah

I'm no Taliyah main but i have put a lot of time into her as of late. I think the current direction of her kit is awesome:

That stated shouldn't worked ground have more impact on her other abilities?

I don't know the numbers but why not make her E do 15-20% less per tick instead of 10/12, and then deal full damage (On live) if the E was cast on worked ground? This would encourage ease of comboing anywhere as intended, but make opponents have to respect worked ground a bit. It also creates a really high skill ceiling on an already skill intensive champion. It fits thematically into a zone control mage.

Its a thought.