More CCC Stickers!

The achievements SIEVING FOR DIAMONDS, BASE BUILDER, GO-TO POSTER, FRIENDS FOR THE LONGEST TIME, I'M BRINGING THE PARTY TO YOU, LETTER OF APPROVAL, DIPLOMAT, and THE BIG CHEESE would all be very nice as stickers.
I can see this helping people use stickers more often, and would greatly be appreciated to have more variety for those who already do use stickers.