Super Paper Mario's ending on its own is emotional, but it becomes even sadder when I think of it in context to where the series would go from there. I have yet to feel like the line "may we meet again in another time and place" is fulfilled, considering the total reboot the series underwent afterward, unless you count the TTYD remake. Which yeah, there isn't a ton of new content in it but what's there does give a very small taste of what I think a hypothetical fourth classic PM game would be like. But as it stands SPM's ending still becomes sadder in meta context, and it was already sad before that considering how attached I became to its characters.