There should be a way to know what the current geo-rep delta is, in bytes and in seconds. bytes would be the total number bytes that need to be replicated for the remote site to match the primary site. seconds would be the delta between $now and the oldest non-replicated data. These numbers could be close approximations if that makes producing them faster.
Feature requests make most sense against the 'mainline' release, there is no ETA for an implementation and requests might get forgotten when filed against a particular version.
because of the large number of bugs filed against mainline version\ is ambiguous and about to be removed as a choice. If you believe this is still a bug, please change the status back to NEW and choose the appropriate, applicable version for it.