I would like a better UI around saving a patch. A few things that would help:
1. Touching outside of the keyboard should be the same as pressing [<- Return].
2. A warning flash or something if you hit Save and something required isn't set, like the location.
3. A different flash or message to let you know the patch was successfully saved.
4. A snapshot feature that saves your current edits to a temporary location, preferably one that can be recalled like commits in version control.
5. Even better, autosave work to a temporary location in case of power outage or user error. Maybe 10 autosave and 10 snapshot slots so there is a good history but the disk space isn't filled up with versioning files (though that would be a great way to save a little space on the snapshot/autosave feature).
I lost about an hour of work last night because when I thought I had saved a patch and navigated to a different one, I apparently hadn't and lost the entire thing.