I read the Tango paper a few months ago, and was generally disappointed, in that I felt that it didn’t have any novel contributions. Here, to me, is how Tango failed to be interesting:
You can learn more about systems that behave like this by reading about Write Ahead Logs (for high performance transactions), Aeron  (HPC message queue with a similar style of fast appends), Datomic (uses a distirbuted WAL, materialized views, and adaptive replication [albeit simpler]), or Samza .
Some areas of work that could, I think, improve the performance of systems like this:
 (please reply with a link to the project itself or video!) https://thestrangeloop.com/sessions/aeron-open-source-high-performance-messaging