Have a thing from the beginning of Buddy’s Book, with Jamie-as-Buddy narrating:
With Captain Dewey's legacy cemented — well, bronzed — I wondered what my legacy would be. Would anyone remember my name? Or will it be washed away by the ocean of time?
Oop, Jamie’s character symbol is mentioned - the ocean! More importantly though, we see Buddy’s last name spelled inconsistently between the library sign and his book in the beginning of this episode!
Would anyone remember his name? The library sign-maker obviously didn’t?? Don’t get me started on how Buddy himself accidentally misspelled Dewey’s last name - he writes it ‘Duey’!
In fact, names are a big thing in this episode - they’re mentioned in passing quite a few times. When Pearl and Garnet find Buddy:
...I'm just a humble traveler who wants my name to be remembered by everyone for all time.
Then Steven and Connie are looking at Buddy’s illustrations of gem sites:
Where'd he get these names from? Ooh! He got this one right!
Buddy seems a bit preoccupied with a) naming stuff and b) people remembering his name.
Then there’s another fun thing pointing to how I think Lion might somehow be standing in for or occupying Buddy’s place as a revived life form:
Surely, if I do explore these places, I'll be remembered as brave and courageous!
Hm. Like a lion, maybe?
This is strange that way - we know Jamie tends to freeze up with fear if he faces danger, but it was never explicitly said Buddy had that problem. If anything, Buddy’s fear was being forgotten.
And hey - whose actual first name is Buddy, anyway? Perhaps his worst fear came true and his real name has been forgotten.
Then you’ve got to wonder - will Jamie conquer his fears? Jamie has more common fears (heights, fighting) but he might have a more abstract one:
Jamie wants to be an actor, right? We’ve seen that he wants fame. There’s a link between Jamie and Buddy there! Neither of them want to be forgotten - “remembered by everyone for all time”?
We don’t know Buddy’s real first name - and we don’t know Jamie’s last!
You see The Wizard of Oz referenced a lot in SU meta - could a combination of Jamie’s and Buddy’s development be the SU answer to the Cowardly Lion gaining his courage? And if that’s the case, how would it be addressed? How do you give someone the courage to risk... dying in obscurity? Yeesh.