A couple more notions that popped into my head while in the bath today.
1) Jar-Jar is clumsy because his body responds to things before they are in his field of physical influence. Because he predicts them being there through untrained sensitivity to the Force.
No Gungans have ever been taken to by the Jedi to be trained because of an ancient Gungan prophecy that a Force sensitive "or cursed" Gungan will bring darkness on the galaxy.
They hide from the Jedi and the Sith to avoid this. Both orders are aware of this legend but only the Sith take it seriously. The blockade is all about Jar-Jar, Jar-Jar is the chosen one who will bring the Sith back to power.
Anakin is another potential Jedi.
2). Jar-Jar is a girl (we see female Gungans in the Clone Wars television series but not in the films) giving the character a female voice would put a large distance between the racial associations of the character and clumsy female characters though not unheard of are more rare than male ones. Also we don't have many featured female aliens in the saga. We don't have many featured female characters at all.
3). Attempting to formulate an edit of the prequels using Guardians of the Galaxy as a template.
For example we have a prologue of Anakin saying goodbye to his mother and the rest of his memories of home are told in flashback or nightmares cut into the other two episodes.
To be honest I haven't given this as much thought as is needed but hopefully just mentioning it will get the ball rolling.
GOTG has scenes and characters which have some parallel with the prequel characters as a whole but not chronologically. It might be possible to mash up scenes from the PT to create a core team of characters at least for one film which enter and exit perils in much the same way that the Marvel characters do.
The relationship between Ronan and Thanos is similar to that of a Sith apprentice and his Master. So Dooku could be the prime villain of the first edit in occasionally in contact with Sidious but assisted by Maul in much the same role that Nebula serves to Ronan.
The council scenes would be as brief as the Nova Corps scenes.
A silent or re-dubbed Jar-Jar (or maybe a ROTS Wookiee) would fit in the gangly alien role of Groot. Yoda would small enough to carried by either and could wield the Force in much the same way Rocket fires his guns. Anakin despite his origin story would probably have to adopt Drax's sullen brooding punctuated by violence role (which would cut his lines down) and Obi-Wan would be a bit Star Lordy. Padme's TPM wardrobe would make her possibly Gamoraesque at least for one edit.
If this could work it would require watching the Marvel film and trying to find an analogue scene in the prequels that could be adapted to squeeze the characters in.
Naturally if this is remotely possible it would take a heck of a lot of rotoscoping to move characters from one film and position them believably in another but it wouldn't be on topic without a radical (if not impossibly so) proposal in the idea.
At the very least it might make an amusing mock trailer.