I am not talking about high quality art. That is fairly subjective.
I am referring mainly to the smart contract itself. One should be able to audit the contract to understand the transfer mechanics. Most NFT contracts are forks of popular open source implementations of ERC721 such as OpenZeppelin's (https://docs.openzeppelin.com/contracts/4.x/erc721). You want to know things like max supply, mint mechanics, transfer mechanics, etc. And you want to be able to inspect the contract, such as this example: https://etherscan.io/token/0x1CB1A5e65610AEFF2551A50f76a87a7...
I am referring mainly to the smart contract itself. One should be able to audit the contract to understand the transfer mechanics. Most NFT contracts are forks of popular open source implementations of ERC721 such as OpenZeppelin's (https://docs.openzeppelin.com/contracts/4.x/erc721). You want to know things like max supply, mint mechanics, transfer mechanics, etc. And you want to be able to inspect the contract, such as this example: https://etherscan.io/token/0x1CB1A5e65610AEFF2551A50f76a87a7...