sorry, I need to leave for a meeting
On the DPN question, I think David Rosenthal's diagnosis of DPN's weaknesses is correct: "DPN lacked Portico's focused marketing pitch, lacked LOCKSS' focus on cost minimization, and lacked both of their business model's justification of protecting investment in expensive paywalled content. Even once DPN achieved production it was little used and thus vulnerable" (https://blog.dshr.org/2019/01/digital-preservation-network-is-no-more.html). Let's not be too quick to extrapolate DPN's fate to other models of community-based DP.
I am really looking forward to reading the documentation from the Archive-It/LOCKSS PASIG meeting!