when we do a review which requires a lot of changes - let's say two or more rounds of the review-fix loop - it is extremely difficult to do.
show the comments - you soon stop being able to understand what's going on in the code, because the comments are interrupting the flow
hide the comments - you have can easily introduce something which has been already pointed up or even discussed and resolved
It would help if I was able to hide resolved comments and keep just the open. Also some ticks on lines which were previously commented with an optional pop-up on hover...
Thanks for considering these points