KH3 has to be done. It's the only way the true ending where they get yet another bottle message from Mickey can be explained. Knights in armor battling years before the events of KH wouldn't explain it. A trip to the past wouldn't explain it. And revisiting Roxas and his days in Organization XIII won't explain it. To not do one would be like having a laser pointer in front of your cat and/or dog and yeah, you let them run around, but you never stop. Never let them catch it.
And I'd consider it one of their bigger franchises. I wouldn't say this before but I see a lot more people saying they love CT ever since it came on the DS, many even going as far as to call it the best game of all time! Ever since the DS version of CT it's become a lot more known now. They just needed to re-release it and make it well known and advertised, which they did not grandly but a decent job this time unlike the PS versions(one had no advertising and was impossible to find and the other just happened to be a "bonus" to a FF game). Not to mention as big as DQ is, it doesn't seem to be one of those series where once everyone's played they continue to cherish it always. Proof? How popular is the one on the Wii? How many people actually knew what it was before VIII? And as for VIII, it was big when it came out but not long after no one had quite as much interest in it. It seemed to be one of those "ooo looks pretty I'm getting it" games that later on collects dust.
Not to mention SE has plenty of smaller games but how many have plenty of games in their series? FF has plenty, KH, DQ, Chrono has made a good number of appearances. None of their other series have had plenty of games made, not even remakes.
