Selling REQ Certifications

Suggestion: Make it possible to sell REQ certifications.

I hate having a dozen mongooses and needlers filling up the majority of my Gold or Silver pack. I know I can just sell undesired items, but this means there will be a much smaller chance of me getting anything I actually want.
Please, make it possible to sell certifications, too.

I agree there are some req I don’t care about. No one needs 80 mongoose cards