I'm not sure if there's a term for it, but you can repeat a progression without resolving the chords to build tension. It might be a suitable effect and help with finishing it.
Trying to over-specify goals and whatnot is the #1 killer of new communities. It's best to let things develop organically with a bit of guidance from mods/admins and the community to keep jerks and Nazi nonsense out. An image of a specification will emerge by the time it's necessary to specify to keep things from getting out of hand.
Kye Fox @ Kye @pawb.social Posts 7Comments 6Joined 2 yr. ago 
I'm not sure if there's a term for it, but you can repeat a progression without resolving the chords to build tension. It might be a suitable effect and help with finishing it.