Support my feature request to have "calculated" Value List.
The current alternative would be to use a "selection portal". The portal can be sorted on any field in the portal's table so this gives you sort options not possible with a "use values from field" value list. If you put the selection portal inside a popover, you can reduce the footprint of this control to the same size as a drop down list or pop up menu.
For examples of selection portals, you can take a look at:
There are a number of working examples with detailed descriptions of how each is set up and how they work.
Shame, but I'll look into making a selection portal.