There is still a lot of wiggle room to be had between Ep 3 & 4, i would love to see Mace Windu come back & hunt down Vader, kind of just a pipe dream now though for Mace to return, he was so underused in the prequels along with other council members.What other Star Wars projects feature the same/similar scenario?
On some level they have backed themselves into a corner with the way the world and Star Wars timeline is built. It's difficult to do a story about Jedi unless it is either in the prequel-era or the Old Republic era. The prequel era is commercial poison and means that the most beloved and iconic vehicle/enemy/character designs can't be used. Lucasfilm seems to have declared the Old Republic off limits. Respawn doesn't have much choice but to set the story in between Ep3 and Ep4.
But yeah this does seem to be a little been there done that imo, a young jedi in training fighting against the empire, that has been done.