Making the !bangs more explorable is definitely partner to making them generally more visible. Someone had suggested an instant answer that would actually fix this: https://duck.co/ideas/idea/832/where-goes-that-bang and someone started working on it recently: https://github.com/duckduckgo/zeroclickinfo-spice/pull/546

We plan to overhaul the !bangs page when we get a moment and something that's already in place is a categorization system: https://duckduckgo.com/bang.html i.e. they're arranged by type! So someone could, for example, modifying the upcoming instant answer to show all the available !bangs and their associated domains by searching for "image !bangs" (which would show all the available !bangs under the "image" category) or !blogs, etc. Is that more of what you mean?