You need a 6th cover solution

Flydecoder

In the past 48 hours, I have drawn a sixth cover for
Lockjaw (2/3/5)
Nightcrawler (1/1/5)
Vulture (5/1/5) - both 6s
5pidey (5/1/5)

Cmon...This is ridiculous.
You need a pick a colour solution.

Open up the cover swap option to all levels... not just champs

gmtosca

Or at least, 3 free swaps.

jtmagee

Or a coverless Cover we can distribute where need be. 

Anduinel

Or heck, even just go the straight-up $$$-grab route and let folks swap out cover colors for a few bucks a pop once one color is maxed out.