Lol at people saying Ultimates shouldn't exist. The devs want to make it because there is a desire for hard content and it let's the them flec their creativity. The reason there's going to be one like ShB was because of the pandemic constraining their dev time, being unable to add another one.

Idk where I heard of this but I think the person who made UCoB and UWU left or stepped off so that's why TEA was different.

And ultimate is literally reused assets with some different icons slapped on the mechanics. The hard part is actually designing a challenging fight.

And making Ultimate even longer is exhausting and longer does not equal more difficult. Wiping and having to start over a long fight is already painful enough. I'd rather a 3-4 act fight. If they do make it longer however, I wouldn't be opposed to it.