@Rioters a small Idea for Riven ult

What if you had to charge the power of Rivens ult by holding down the R button for up to 4 seconds and release to fire it (like or Q) I this could take away alot of Rivens SUPRISE assassination power that Riot doesnt like and add a way to make her ult more impactful in teamfighting or Wombo combos . Riven would become alot more readable to the average player and her combos would remain unchanged. Of course I think some changes would have to be added to her other skills so she can use them without canceling the channel but I think this could be a neat Idea that would be a step in the right direction for Riven.

thoughts?