Currently, the DataCite integration into Esploro creates a DOI suffix that is not randomized. Instead the suffix just increases one number at a time. For example, if we made our starting number 1 with 8 zero padding, I believe the DOI minted in Esploro would follow a pattern. I am under the impression that it is better practice to have a random string as the suffix. To follow best practice, this means that when I add data to Esploro, I mint the DOI in DataCite, instead of using the integration.
A potential solution to this problem would be to mint DOIs with random string suffixes through the Esploro integration.