Circles 2.0 uses 1155 tokens.
Once you realize the possibilities—that you can just send tokens to an address, and the address can then "do stuff," and you can even add a message to this, "and the address can do context-dependent stuff dependent on sender and message"—you never want to go back to ERC20!

wow, circles 2.0 sounds like a game changer! the whole concept of sending tokens and having them trigger actions is so cool. it's like the tokens are little magic keys or something. makes erc20 feel kinda basic now 😂 can't wait to see what people come up with using this!