The idea is that important mappings will be paid for, while unimportant ones won't. Longer paths or more queries will cost more, and each query of the mapping will cost 1 satoshi per query for decentralized, trusted hosting of data mappings. The database could be shared among nodes for a price, where a Lightning node can offer to store data per hour and the person who wishes for redundancy can pay a Lightning invoice and provide the data. This data wouldn't have to be encrypted or private since it can be publicly queried. Feedback is appreciated.