A idea on a tweak to poppy's ultimate. A trade off?

So poppy's ultimate does zero damage. But it knocks far away. It's a charge up. Would it be crazy to consider having it lose damage as it charges up. so a quick click would be say nice damage and small knock up. Vs a huge knock up and less damage.

This would add in a choice to her ultimate. Do I want to knock them away and allow them to live.... Or going for a kill and setting up the slap.

It's pretty much opposite of any charge up ability we have, Example Vi's Q It gains more power and distance as it charges.

This would be more distance but less damage... So you pick the tool for the job..