Each facility has a level cap based on the number of NFT types held. Each new NFT series you have at least one of will increase your Level Cap on facilities by 5. For example, if you have a LSNF NFT, your level cap will be 5. If you have a LSNF and a LSMD NFT, your level cap will be 10. If you have two of the same NFT types, your level cap will not increase.