Similar to how Wikidata does it, we should make collections into wikipages, except that they will be owned. This task can either replace or be implemented in addition to T94527.
Each collection should become a wiki page Collection:C12345, possibly with a fake subpage if we want URL autocomplete possible. The "C" prefix might not be needed - TBD. Thus, collection URL becomes:
The collection will be rendered identically to how it is now under Special:Gather, but it will be possible to easily link to collection - [[Collection:C12345]] and many other regular wiki functions like "what links here", recent changes subscribtions.