The "sorting images" thing I really don't have the time to do at the moment. That's "adding a new feature to Fabrik", which comes under the heading of "custom coding", and isn't typically covered by a sub. It's stuff we sometimes do if we have time, and if someone hasn't used their subscription much in a given month. But you've been hitting us up pretty hard!
If it was just a case of switching "ASC" to "DESC" in a query, I'd do it. But that would then change the sorting behavior for everyone, and I can absolutely guarantee I would immediately have people complaining about that, as their images would now sort "wrong". So it would require adding a new setting in the element options, which adds a lot of time to the task.
-- hugh