Nothing further. I replaced the buttons on my Picade because every single one of the black buttons broke at least one tab. The coloured buttons seemed fine, although one did break a tab when removing it.
On my Picade Console, all of the buttons survived as expected with the exception of one of the black buttons breaking off a single tab. This was with 100% no usage, just sitting for a few weeks and when I picked it up, I could hear the rattle sound of the tab loose inside. Open the back and shook out the tab.
I must stress that I have not been doing anything with these buttons outside of pushing them when appropriate. There is something wrong with the tolerances of the Picade and the buttons that doesn't seem to be an issue with the Picade Console, at least to the same extent since one of my Console buttons has done the same thing.
For now, the new buttons seem to be in the exact same compressed position, but they haven't broken as of todays' date.