kio-stash was written by a student during GSOC 2016 and is currently made an official project.
It has the same purpose as virtual:/, lists of references to files, but with currently (at least) two limitations:
- not persistent between reboots. We could extend kio-stash or make the solution Krusader specific (again).
- no full support for other protocols than file:/ (at least mtp:/). Must be tested and fixed.
We can remove a lot code that takes care of virtual:/ once there is a full replacement.
(And as bonus: e.g. create search results in Krusader and view and use them in Dolphin or Konqueror)