There is a good case for adding ancient languages to Unicode. I can also see the case for adding smiley faces, which could be seen as a contemporary global language. But I fail to see the case for pictures of poop, pizza and cowbell. That just seems a bit random to me. Maybe everyone is drawing the line somewhere else, but I'm guessing most people don't want to go down the road of adding company logo's for Coca-Cola and McDonalds or pictures of the Americans presidents or the sigils from Game of Thrones. It's good that Unicode is extendable and all, but that doesn't mean we should be adding glyphs just for the sake of it.

Also, adding political glyphs is a sure way to ruin the universality of Unicode (I'm looking at you no-piracy).

All that said, I love Unicode, it has flaws but I think it's brilliant (no sarcasm).

Also, can't wait to actually use the man-in-business-suit-levitating-glyph (sarcasm).

I'd use the Unicode sarcasm marks, but your font probably doesn't support them yet...