First off I want to thank all the writers here for all the awesome plugins. Sometimes I think I use the plugins more than the native tools!
On topic, is there a plugin that allows you to remember the changes made from a certain point and then allows you, if you so choose, to undo all the actions back to that starting point? This would be useful for quickly iteration an idea and then undoing it without having to multi-undoing and guessing how far back to go.
Perhaps such a plugin already exists?