If it's a popular enough song (particularly if it's a Hello! Project or Johnny's song) chances are we've considered doing it. Usually a PV project we go with depends on the collective staff interest and if we have a suitable raw. After all, what's the point in putting in the work to bring you great PVs if we don't have a good quality video to back it up?
We can't commit to anything specific, but don't give up hope! You might see it someday