• Map Accounts to Roles - AccessControlEnumerable
• NFT owns NFT - introducing-crypto-composables eip-998 https://github.com/mattlockyer/composables-998https://github.com/ethereum/EIPs/issues/998 ()
• Recursion - ‣
• https://eips.ethereum.org/EIPS/eip-2535 - Diamonds, Multi-Facet Proxy

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