What if CDR granted different effects past the CDR cap?

Overload Increases base spell damage, base heal values, and base shield strength by 1% per 2% Cooldown Reduction past the 40% Cooldown Reduction cap up to 20% increased values. Current Increase: X/20%

Eh? Eh?
What type of builds this could enable ... And Intelligence would do:

Intelligence Grants 1.5/3/4.5/6/7.5% Cooldown Reduction and reduces Item Active cooldowns by 2/4/6/8/10%.

Which is also nice.

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It could do other things:

Haste Increases Movement Speed by 1 per 1% Cooldown Reduction past the 40% Cooldown Reduction cap. Bonus Movement Speed: X

Might allow you to switch out boots with a heavy CDR build. No cap.

Tinker Reduces Item Active cooldowns by 1% per 2% Cooldown Reduction past the 40% Cooldown Reduction cap up to 15% reduced cooldowns. Current reduction: X/15%

Would also reduce Trinket cooldowns, fyi. Would be good with Randuin's Omen, and Support Items, and things ... Less interesting than the former two.