Do you think Ashe might be better off if her Frost Shot were a limited-duration steroid?

I was looking at a thread that suggested making Volibear's ult and Kog'Maw's W a toggle, but obviously making them that way would cause severe imbalances. In looking at the idea, though, I had a thought: What if Ashe's Frost Shot weren't a toggle, but a temporary attacking steroid?

Would this enable Ashe to have more power? Or does it conflict with her game design?

This isn't to suggest that Riot actually make such a change. It's merely theorycrafting.

EDIT: Nice, we got Riot's attention. Now to show an example of what I think could work. Remember, numbers are just theoretical, and can easily be adjusted.

Passive: Adds a 15/20/25/30/35% slow to Volley.

Active: For the next 6 seconds, Ashe's basic attacks slow enemies by 30/35/40/45/50% for 2 seconds. During this time, Volley's slow is also increased to 30/35/40/45/50%. The passive effect is disabled while Frost Shot is on cooldown.

16/15/14/13/12 second cooldown.

Sure, you could almost get that permaslow back if you have 40% CDR, but is that really wise on Ashe? That's a matter of debate and circumstance.