Wouldn't that just make it a Configuration File instead?
Settings > Backup & Restore. Then you save an .ocb file.
From KingOfDaClick's Pack 2020 - (.ocb file only)
Unlike themes (.dlt files), configuration backups replace your entire configuration. Installing a configuration backup will change every single Opus setting, and all your toolbars, folder formats, etc., to the ones saved in the file by the author.
It might be worth a shot, at least.