These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Steven Universe
Alternate Character Interpretation: The second episode has some of this regarding the Gems. Is their request that Greg not involve himself in magical matters out of concern for him, or do they see him as a bad role model and made the request to limit his influence on Steven?
Or Greg is actually not responsible enough to be a full time parent? Or does he resent Steven for losing Rose Quartz?
As of "Cat Fingers", it may be more because of how inherently dangerous the fledgling powers of a Gem are (learning to use his Voluntary Shapeshifting powers resulted in Steven turning into an amorphous blob of cats and nearly destroying himself), and Steven's dad just is not up to task to keep Steven safe from harming others, or himself.
The show's theme song is just lovely. It's a keyed-up, more upbeat version of the aforementioned song from the pilot; just the fact that the song holds so much meaning to the Gems that they'd sing it all together is just awesome.
Fandom Rivalry: Only a few episodes in and the fandom is locking horns with the fanbases of Uncle Grandpa and Adventure Time. Uncle Grandpa fans are mad that Steven Universe took its previous Monday timeslot, and Adventure Time fans see it as somewhat of a ripoff due to its superficial similarities. Ironically, Steven Universe was created by Rebecca Sugar, a former worker on Adventure Time, and thus, many Steven Universe fans are also Adventure Time fans as well. On the other hand, a lot of Steven Universe fans see Uncle Grandpa as terrible, thus fueling the rivalry.
Misblamed: There were rumors going around that the show's design change from the pilot episode was because of Executive Meddling and apparently low budgets. In reality, the change was done by the show's creator, Rebecca Sugar, and was created and finalized long before the pilot was leaked. In fact, the show's budget is much higher than the pilot's.
Moe: Connie. The general fan consensus is that her debut episode ("Bubble Buddies") is the most adorable one the series has offered thus far. What really drives this home, though, is the third act, when the poor girl starts to cry and worries that nobody but her parents will miss her if she disappears.
What The Hell Casting Agency: Not in a bad way, but an odd way. The voice casting choices are unusual ones. Rather than established voice actors, we have pop singers, teen stars, and radio personalities. It's almost as if a bunch of old friends in the entertainment industry had a reunion.