Poor Dragon Quest is trying. Though Square Enix did it a huge disservice by realizing Dragon Quest XI the same time as Spiderman and not giving it a chance. Advertising for it was lackluster as well. I can only remember some advertising for it and that was from other journalists on youtube.
If Square wants Dragon Quest to have a chance outside of Japan, they need to give it a chance. ):
Final Fantasy has always had it's up and downs and struggles. Though got to agree with you here.
KINGDOM HEARTS is certainly becoming new Square's face in terms of "consistency". There's only one iteration of KH. Unlike the FINAL FANTASY franchise which tries something different everytime with different development teams, directors, producers, etc. But what has affected FF the most has been the meddling of management, and this started with FFXII, which I think was the first ever major FF game to have gotten a director change.