I just got an amazing au idea concerning Fives and Echo.

So, after the Rishi moon situation, Cody and Rex decide to fold the twins into a battalion instead of keeping them on guard duty, and Rex ultimately takes them into the 501st. But. What if Cody was the one to take them and they became a part if the 212th?

Cody would have ten times more migraines then he usually does, caused by none other than Fives who would get along with Wooley like a wildfire. Echo would be his only saving grace, and both if the twins would become marginally more capable under Obi-wan’s and Cody’s leadership then under Anakin and Rex, mostly because Obi-wan, unlike his padawan, had actual plans.

The events of the Citadel remain unchanged and Echo still gets taken by the Techno Union, but when Fives discovers the plot about the chips (lets act like Tup was with the 212th as well) he goes to Obi-wan and Cody. They, unlike Anakin, have always known that there was something wrong with the war, especially with the knowledge that there was a Sith in the senate. Fives also knew that the two of them were compassionate and would listen to him no matter that the Chancellor said, so when he asked to meet them he set no traps.

When the two do show up, they immediately realize that something’s wrong with Fives and take him to a ship while he talks and they listen. They listen and by the time they make it to Bones who gives Fives an antidote for whatever poison the Kaminiise injected him with, Obi-Wan is on call with the Council.

A few hours later and all of the GAR is on comm blackout so that no calls go in or out, and the Council is storming the senate dome, sabers blazing. They kill Palapatine, the Separatists send negotiation requests days after that and the war is over just like that. They find Echo after raiding the Techno Union, and the twins live happily ever after along with the rest of the vode who are granted citizenships.