That's about your only option. The "All Ohio Code Plug" was put together by an Ohio ARES member who updates it as time permits. If an update is forthcoming it will probably be later this year after the statewide ARES meeting.
I don't see any reason to recreate the wheel if it already exists, and I don't have tons of free time to devote to researching 13 months of changes and new repeaters if someone else has already done the work.