I opened a couple of issues and did some minor contributions in the past and at every point problame has been approachable and a pleasure to interact with.

From a user perspective, I'm still feeling a lack of UX in restoration/clone-management from the snapshots synced by zrepl - things can easily get messy if you don't know exactly what you're doing and keep track of things properly. That might be out of scope for zrepl itself, though.

Some more proactive/pre-emptive pruning would also be great - falling behind on syncing can be downright painful if you don't pay attention... Which is just to say, don't skip setting up some basic monitoring with alerts for production loads (:

Either way, all things considered zrepl is the nicest zfs replication option I found so far.