This got me thinking...
I wonder how well a "5e" version of Saga would work?
One of the biggest problems with Saga was that everything scaled wildly different (skills were super high and slowly grew, defenses steadily grew, and attacks varied on class) which resulted in a small "sweet spot" around mid-level where all the numbers converged, and widely unbalanced beginnings (Where Skills dominated defenses, making the Force an auto-win) and ends (by high level, your defenses were so good using the Force was useless). 5e's singular "proficiency bonus" to attacks, saves, skills, and (in this game, to compensate armor) AC would be a good fix to the math.
Additionally, subclasses would be a good way to introduce archetypes (Jedi Guardian, Consular), Hit Dice (with the Healing surge variant) is a good Second Wind mechanic, the game is balanced against not needing magic items, and I'm sure a decent Force mechanic could be hammered out of Saga's encounter-card system and 5e's pseudo-Vancian magic. Oh, and Backgrounds would be great for distinguishing pilots, bounty hunters, farmboys and rebel princesses.
Heck, the Fighter could Straight Up be used for Solider, the Rogue is probably not far off of Scoundrel. Bard and Ranger (reworked to avoid spells) would be Nobles and Scout bases, and Jedi seems like a good Paladin/Eldritch Knight hack. It'd take some work, but I'm sure it could be done.
I would love to see a space opera version of 5e (I.e. Star Wars with the serial numbers filed off).