I think you've said it. It add functionality on top of a plugin structure. The additional functionality like ORM, migrations, validation, etc etc. Makes life easier for plugin developers. We intend to address other areas where we think we can safe time for developers doing the daily mundane stuff.

I've certainly had issues with doing repeat stuff so scratching my own itch.

I am sorry, I couldn't convey the benefits much better. Any suggestions you would like to give?