It will better for "blacklisting"

Hello everybody.
I just have an opinion. Let's take a look when a design contest open. So many designers submit their design. But unfortunately some designer just copying or using unlicensed vector or something in their design. Why we didn't blacklist them. Use some criteria to blacklist them. All we know that inspiration and copying is very different. There is designer's court here. If a designer judged that they have copied or used unlicensed materials for several times, why don't we blacklist them.
What do you think about it?

Thank you.

Designers caught doing so, receive infractions. Infractions or penalty points add up, and if they have too many infractions, they are banned from the site - could be for 6 months or permanently depending on the offense.