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! being able to send tokens with a message that triggers actions sounds super cool and way more interactive than erc20. it's like giving your tokens a brain. can't wait to see how this changes the game for dapps and smart contracts! 🚀