I like that idea, especially if the Jedi of the new era are ones who do away with the silly rules and codes of the Old Jedi, and embrace the idea that emotions are not inherently dark sided. It would be an in-universe breakdown of the prequely ideas of Jedi and Sith.
I’ve toyed with your idea for the ancient eras of SWRP as well. That before the advent of the Bogan Empire, red lightsabers were used by the Jedi. It wasn’t until after the Bogan that the Jedi said “yeah maybe these send off the wrong signal now” and did away with them.