Personally, I don't see the need for this be tackled in Pd, since one
has enough control in the patch to re-order scalars as desired. Rather,
I believe dealing with this is best left to the patch author.

There would be two ways of forcing the author to deal with it:
- externally by making it the user's responsability, as indicated in the example in the patch
- internally by adding a metro with a redrawing command (adding lots of unnecessary repeating commands to Pd's heaviest member, the gui)
Both are a burden either to the user, or to the patch. Garanteing a stable behaviour would be better, instead of shortcuts.