1.NFT avatar
2.Red packet function in group
3.Gambling
4.Social circle
......
In the future it should be built on the full blockchain .
These things can be easily managed by interacting with the smart contract, so the onChain bitcoin network is not suitable for this. Either you choose a sidechain and then start building on top of it, or you move to Ethereum, where dealing with smart contracts is better, and then you will face the problem of high fees and you will be forced to move to the second layer, such as MATIC.
NFT Avatars were popular in the past, but companies started to drop the idea.
X Drops Support for NFT Avatars