We have reviewed this and have elected to not include this on our road map for the time being. We may revisit this in the future so will leave as unplanned rather than declined or closed.
Thanks for your suggestion and comments.Anonymous commented
Agree would make cosmos viable in low latency situations for event sourcing. Using the ChangeFeed is difficult for low latency since it drives to cost up turning the polling interval up. Batches and error processing are also painful.