The 1993 and 1995 championships were played under the PCA banner, but not 2000 (Braingames) or 2004 (Classical). The four non-FIDE world championships are retroactively known as the Classical World Chess Championships, and we referred to Kasparov and Kramnik as the "traditional champion" at the time. Either of those would be better than listing them as "PCA" champions.
Also, you can use "Undisputed" instead of "Reunited" after the split ended. That term might have made sense for the single championship between Topalov and Kramnik, but I don't think Carlsen (or his successors) thinks of himself as a "reunited" champion.
I was trying to honor the great chess champions and not go deeper on all the infighting and the drama that we already left behind. Chess speaks for itself.
By keeping the titles "PCA" and "Reunited", you're doing exactly what you said you didn't want to do! The PCA is why there was a schism to reunite! Again, Vladimir Kramnik was never the PCA champion, but he was the "traditional champion". "Traditional" and "Undisputed" remove the infighting and drama alluded to by "PCA" and "Reunited".
Current rules do not allow machines to become world chess champions, I guess by the same reason that motorbikes are forbidden in track & running events. But I hope we can see AI tournaments someday.
It would. Also it would make more sense to include their first and last names as an acceptable type-in. Kinda bad that "Magnus Carlsen" is considered wrong, y'know?
Also, you can use "Undisputed" instead of "Reunited" after the split ended. That term might have made sense for the single championship between Topalov and Kramnik, but I don't think Carlsen (or his successors) thinks of himself as a "reunited" champion.