I agree with you here, but to me it’s a problem which can be fixed by the marketplace no? Why dictate what is best for Nodes when incentive is enough? If a node can gain advantage by lowering dust limit, he will. In the meantime I think the dust limit and pruning can be great for BitCoin. It’s forced obsolescence of data which is no longer valued. By having dust limits the Nodes force devs and users to evaluate which data they have on chain is important. This is something Google cloud or Apple cloud or AWS lacks and it leads to things like 1.9 mm search returns on google where maybe only ONE is relevant. For instance we don’t need 100 million people etching the soccer score into the blockchain when the Workd Cup official entity is just one official score for all. No one goes past the 2nd search page on google searches.