On my hunter I can have two uses of Aimed Shot stored up. When I use one there is a cooldown icon that pops up. Which makes me think I can't use my spell again until it's gone. BUT I have another charge/use of Aimed Shot I can immediately use.
I'm thinking on spells that have multiple uses or charges, but still have a cooldown, SHOULD NOT show a cooldown icon with a countdown until all the uses or charges are used up.
I was able to modify the game version 10 code to work correctly. But the 11.0 code is a bit over my head.