The review of SE-0280: Enum cases as protocol witnesses begins now and runs through March 17th, 2020.
Reviews are an important part of the Swift evolution process. All review feedback should be either on this forum thread or, if you would like to keep your feedback private, directly to the review manager (via email or direct message on the Swift forums).
What goes into a review of a proposal?
The goal of the review process is to improve the proposal under review through constructive criticism and, eventually, determine the direction of Swift.
When reviewing a proposal, here are some questions to consider:
What is your evaluation of the proposal?
Is the problem being addressed significant enough to warrant a change to Swift?
Does this proposal fit well with the feel and direction of Swift?
If you have used other languages or libraries with a similar feature, how do you feel that this proposal compares to those?
How much effort did you put into your review? A glance, a quick reading, or an in-depth study?