well, honestly, i dont think they will ban because;
remember when patch 3.3 hit, with the new LFG system where you get 2 emblems of frost for your first random heroic each day?
you were able to do that over and over again for the emblems of frost.
No one that i know that did this got banned or got their emblems removed, they just hotfixed it.
could be the same with this.