
There are a number of things we could add to improve this screen to encourage the user and tell them what's going on.
For example:
_Welcome back! You have 29 unsaved changes around Atlanta, Georgia, from 3 weeks ago. Would you like to restore them?_
Love these proposals! 馃憤馃徎
I implemented the message changes and also moved the restore functionality into the new assistant panel. This is much less intrusive than the fullscreen splash and allows you to poke around the UI before making a decision. Editing is still disabled until you decide.
With this UI it'll be simple to show the changes in the map once we build a visual diffing feature.

Ha, I like it!
(The code is here.)
OK, for now, please at the bottom of the two choices,
have the words:
"_If not sure, just press Restore. You can always undo those changes again before saving._"
Most helpful comment
I implemented the message changes and also moved the restore functionality into the new assistant panel. This is much less intrusive than the fullscreen splash and allows you to poke around the UI before making a decision. Editing is still disabled until you decide.
With this UI it'll be simple to show the changes in the map once we build a visual diffing feature.