Yes, other things seem to have higher priority and I mostly agree with those decisions. So if the goal is getting better UI soon and with little effort, then there might not be much point in asking.
But we have also seen some UI improvement, perhaps mostly in Calendar. (And remember how Jolla received flak for releases with just UI polish, but no new features or improved functionality.)
So if the goal is to develop good ideas, then I’d say it could be worth it. Someone in the community might pick up a good idea and make a patch. Jolla might pick something up for inclusion when they do have resources to spend on UI.