This is why I love code review tools with a "task" function (e.g. BitBucket). Adding a task blocks submission until the task is marked completed, but anyone can

This is why I love code review tools with a "task" function (e.g. BitBucket). Adding a task blocks submission until the task is marked completed, but anyone can do that. So, you can approve a CL but add tasks for nits or non-interactive suggestions (things that can be done without needing a response from the reviewer). Then, the author can implement the tasks they find reasonable and ack the rest and not be blocked on submitting by a bunch of back-and-forth over style details.