The new fiora update looks amazing, but...

Why does she have to do % Maximum health true damage on her ultimate?

I thought we were in agreement that was a toxic mechanic. It's a little early for me to say this before testing, but I just don't like the idea of it.

Edit: For those who haven't seen the new fiora rework, its here. http://euw.leagueoflegends.com/en/news/champions-skins/champion-update/champion-update-fiora