While I can see why people would like Future more than SU, as seen in this thread, I have a lot of gripes with it that will keep it from being kino. For every step forward, they took two steps back and ultimately, it’s something not really needed from a narrative standpoint.
To give you a more concrete answer; mostly new staff+limited episode run=less room to fuck up.
I kinda like it because I think of it as a sort of meta-commentary on the aftermath of a hero finding no purpose within himself after having saved the world.
I read this thread and people say it ruined the characters and I don't look at it that way. In fact, it made the characters more complex. The OG series, the characters were bland and one-note, and here for the most part (with a few exceptions), they deepen the characters, particularly Steven. I'll use one example. With
Mr. Universe, for example, I think it expanded the extent of Greg's character and the relationship between Steven and Greg. Greg has always been a well-meaning father or whatnot, but he's too easy on his son. He's always been that way. He's caring and nice, but he's too nice. He's merely only a free-range parent because of the strict way he was raised as a child. Similar to Rose, Greg rebelled against the authority for his own self-interest and in the end, this affected how Steven copes with life. Greg rarely got mad over the course of the show with him, with the exception of
Beach City Drift where he sternly said to Steven to not say "hate". Even though Steven has gone through various challenges (some of which in particular within the 5th season, he didn't react to in the most proper way), his father never raised him to be tough, socially, and deal with his own personal problems without breaking down considering Steven was always solving other people's shit. In fact, I look at it as sort of a way of how Greg failed Steven. Steven is way too sensitive and that's due to Greg's sentimentality and Rose's free-spirited shit being projected onto him. Greg never gave Steven challenges, Steven had to go through challenges on his own measures. Imagine, hypothetically, if Steven was not even a Gem and Greg raised Steven in that same manner. Steven would've just learned how to be constantly reliant and needy on others and the slightest challenge would've probably broken him. That final scene in the episode where Greg coddles Steven and shit after the whole car crash and then it just focuses in on Steven deleting the pic off his phone felt to me sort of a defining factor of Steven rejecting his father's easygoing ways. Jasper, within
Fragments, metaphorically is supposed to be Steven training to be a tougher person even though most of this is driven by his anger towards the people around him.
Steven, although he's an irrational teenager in some cases, has a point with most of his critiques towards his dad. At the end of the day, Greg didn't raise the boy right. The gems didn't either considering that they basically forced themselves to train Steven to fight for his life.
Edit: Also, I am in NO WAY defending the utterly shitty writing that this entire franchise has delivered up to this point. I'm just saying that I think the way that Future sheds light on the characters doesn't ruin them, but it gives much-needed depth. I hated how the OG show's characters were mostly stereotypes and you saw those stereotypes in stories and none of those interactions had much impact.