I think that it would be good to have the ability of suggesting a strength for another listing (similar to LinkedIn): Do you know that another church is great at hosting events? You can suggest "hosting events" as a strength for them. Maybe you can make the suggestions viewable only by the owner of the listing until they're approved by the owner.
As with any new feature, there are ways this could become less-than-helpful (e.g. someone constantly suggesting the same strength, that you don't want to add to your profile), so you'd have to consider whether the benefits outweigh that potential downsides, or design your way around some of the downsides.