An idea as to balance Lulu in a healthy way

So this just popped into my head as to a solid way to tweak Lulu so hear me out.

What if... her ult had a 1-1.5 second delay? It would create a reasonable way to counter her ult as it would create the choice to go harder on the target before the ult pops or to disengage to avoid the knock up.

It would also free up room in her power budget to allocate it to other places as it would no longer be an instant gain X amount of health/knock up/aoe slow.

I know there are other problems with her kit, but this just popped into my head and seems like a healthy step in the right direction.

What are your thoughts.