maybe in all the other garbage media they knew about the Gungans, but as 2 showed, the Jedi didn’t know everything, because “if it doesn’t exist in the archives, it doesn’t exist”.
They didn’t even know the ewoks existed on Endor.
This is where the failing of the Disney fanfic comes into play, there is so much unknown about the single galaxy Star Wars takes place in. Maybe novels or the cartoons went into some of it, but the movies could have been set on another planet, that didn’t even feel the Galactic Empire, or the Galactic Senate.
I mean what happened when Naboo became a 2 representative planet because a new species was discovered? Why did the Naboo ever disclose the Gungans to the senate before?
The prequels do really ruin the story just to tell the angst teen mode of Darth Vader and insinuate he never grew up, but the original trilogy Vader is nothing like Ep 3 Vader, and no reason he would have calmed down if he was letting hate guide him.
This doesn’t mean Lucas would have done any good with his Whills control the universe and eat the force (aka midichlorians) trilogy, because that isn’t what people want. People don’t even necessarily want the continuation of the Skywalker saga, they jut want to know what became of Luke and Leia after Return, and that has not been satisfying for anyone. I mean when reports online and spoilers that Han died , people weren’t happy.
Luke being, not a nerf herder, but a scruffy looking thala-siren milker et all… sure doesn’t do anything to make any of the Disney trite less trite.
We were brought in by a Galactic War and a rebellion, and that should have ended with Return. we don’t need trillogies for each order preceeding Order 66 that killed off the Jedi, but that seems what Disney wants to give.
The First Order trilogy
2nd order trilogy will be next trilogy… and so on.
Palpatine is dead, get over it space nazis!
Like I said recently elsewhere, Vader being the Chosen One, has failed. Neo didn’t save Zion thanks to Ep 7 and 8.
He should have balanced the force, otherwise Disney is trying to discard every bit of lore that came before that makes the Star Wars universe. This means that Vader being redeemed should have been a sign that balance and the force equates to yin and yang. There cannot be light without the dark.
Force users must accept both, as shown by Yoda several times in all 3 trilogies. Qui-gon came back from death, this is an affront to the light side and becoming one with the force, but is a dark side power, or should be, thus teaching Yoda, to teach Obi-wan, means they all gained balance with the force; taking in and using both light and dark. Likewise Anakin, whom we see only prior to the SE editions before emo boy takes his place and the sparkly vampire jedi/sith. Was Hayden Team Jakob or the other, i couldn’t tell. 
7 should have been about Luke seking balance “like his father before him” as a jedi, an what it means. and like Empire they should have split to the restructuring of the galaxy government and such after the years of enslavement to the sith. I mean they did it before to recoup after sith rule and it seemed to go well. how long was it since the sith last ruled as Palapatine mentions “Once mor the Sith shall rule the galaxy and we shall have peace.”?
maybe if more places had Rey shield (puns intended), then they could protect form these wanna-be jedi and sith using mind tricks so often, or with FTL travel, and all the other things, just educate people not to be so damn weak willed since there is obviously such a technologically advanced race…
But art imitates life, so with modern social media making people dumber, you don’t even have to wave your hand to control the weak minds since they use technology as a crutch and reason not to both to learn anything.
Star Wars Ep 30 will take place Orson Wells Time Machine, where they are right before the cataclysm that creates the morlocks and eloi. that cataclysm obviously being social media. 
the eloi are starting to breed even as we speak.