Several aspects of BRC-20 tokens could be improved in order to achieve wider adoption:

Scalability: As more applications and use cases for BRC-20 tokens are developed, there is a need for improved scalability to ensure that the network can handle a high volume of transactions without slowing down or becoming congested.

Interoperability: While the BRC-20 standard has helped to establish some interoperability among digital tokens, there is still a need for greater standardization and compatibility between different blockchain networks and token standards.

User experience: In order for BRC-20 tokens to achieve wider adoption, they need to be more user-friendly and accessible. This includes improving the user interface of wallets and other applications, as well as making it easier for users to understand the value and utility of different tokens.