Thanks for the upgrade!
You may have noticed a new feature, "attention set" that is a smarter version of the previous "assignee" feature. I am quite hopeful it can have a positive impact on our review workflows / patterns.
For example "If a reviewer replies, then the change owner (and uploader) are added to the attention set." and the other new rules listed on:
https://gerrit-review.googlesource.com/Documentation/user-attention-set.html
Take a look!:)