The new Updates feature is great, but there isn't a "retry" button when there are validation errors to resolve. It's not very intuitive to have to cancel the update and go start over to retry after fixing validation errors. Currently it just shows that the validation failed and the update can be cancelled. It isn't clear what to do after resolving the validation error, and a retry validation button would simplify the process.
I had an error related to a manual change that needed to be enabled in my sandbox, and I had to cancel the update to get it to validate after making the change. A refresh option would have saved time, especially because I also had merge conflicts to resolve. After I made the manual change there was no way to retry the validation part, and I could only cancel which meant I had to resolve the merge conflicts again to proceed.