here's my reasoning, the issue now is that vanilla is stretching the text a lot, making the text go over and outside the patch area as in many of my help files. So this is the visual issue, things like objects, GUIs and text may overlap in vanilla if a patch was done in extended for instance (and there are still plenty of those around).

On the other hand, old patches from vanilla won't suffer any issue with the text and fonts getting narrower, it'll still look nice. So i vote that vanilla gets to make such changes for the advantage of keeping the Pd environment more cohesive.

cheers