@James: But what have you got against a feature which would allow
people to reverse their actions on items?
People get complacent when they have an undo button. They would make more mistakes because of a safety net, and considering that the tiny amount of issues which will be currently happening, I just don't see a requirement.
I think that a lot of people would find it rather useful
But a lot of people shouldn't find it useful. I'm ok with a few mistakes here and there by a few users, but if a problem exists in such a scale whereby an undo button on reviews would be "useful", then we have a bigger problem to resolve (users not able to review accurately).
This is not a word processor, or a blog post, where undo, edit, rollback, etc, are welcomed. This is a "control panel" and the buttons have real implications to the content on the site, and buttons you and I press even potential ramifications towards other users (if they have too many black marks etc).
This requires some care, consideration, and being careful with said buttons, not a hammy "undo" because we cannot be sensible adults and use it with professionalism.
Even if most people would not need to use it
Then it is not worth dev time planning, discussing, implementing, managing, maintaining, updating, etc.
a 'back' button is always important
I do not have one, and manage just fine. I don't think I've actually ever pressed the wrong button.
Maybe I will one day, maybe twice next week, that hardly warrants a whole new feature on the site.