I have gone super deep in the Darth Jar Jar rabbit hole before and I am convinced this was likely the original intent of the character. I believe he was written to be a character similar to The Mule from the Foundation series.
Foundation Spoilers
The mule was a literal clown that only ever did silly comic-relief things during most of his time in the books. However, it is revealed near the end that he is actually a character that has been manipulating events the whole time and poses an existential threat to the galaxy.
Perfect analogy with the mule.
Stumbles his way into being a background character; an annoyance to the main actors and the plot. Then turns out to be the puppet master all along. I love this fan theory mostly because it is the only way to make Jar Jar a retroactively tolerable character.
