Origins/Major Influence: After the Gold Rush (Fan-created Paranoia Mission by Happy Jack), Subversion of the Enemy (Fan-created Paranoia Mission by Silent, requires access to Paranoia-Live's GM Meeting Room)
Description: This is a Complex that is entirely functional. Treason does not exist, The Computer is not insane, and the cloning system works perfectly to guarantee immortality. Everyone is a High Programmer and has complete knowledge of how to program The Computer, but they do not abuse such privileges, and instead dedicate themselves to a single purpose: paving the way for the re-population of Earth after the global die-off. Everyone is also a highly skilled mutant, but their mutations never backfire or cause any harm. There is no bureaucracy to speak of: if you want anything, you can ask for it and The Computer will give it to you on a sliver platter. And of course, everyone has the time to produce beautiful arts and crafts.
What's the catch?
There is none. This complex is indeed perfect. Which is why all the other complexes want to "blow it all to hell". Which makes sense, after all an actual utopia might cause unhappy thoughts and emigration problems. It's probably not advised for you to set an adventure in this Complex (utopia is boring), unless said adventure has your players serving as Alpha Complex spies seeking to undermine Complex Mu from the inside (as that is the gimmick behind "After the Gold Rush" and "Subversion of the Enemy").
That being said, even in a utopia, things can still go wrong. Infrastructure still needs the occasional maintenance, and maybe Outside suppliers are planning to jack up the price of salt and potentially break down the supply chain. Perhaps the Armed Forces (having not fought any serious battles for over 100 years) may atrophy to the point of irrelevance, leaving Complex Mu vulnerable to a military invasion by savages with pointy sticks. But the most important thing to remember is that Complex Mu was planned this way: any deviation from that plan (including deviations introduced by spies from other Alpha Complexes) would cause the entire Complex to implode into a dystopian mess.
Spy For Another Alpha Complex: Complex Mu's spies therefore have a difficult challenge ahead of them. Their goal is to divide all the other Complexes, either pitting the Complexes against each other or just causing internal turmoil. The spies believe that if the other Complexes are focused on other problems, they will not be able to focus on Complex Mu. There is no margin for error: the minute a rival spy successfully infiltrates Complex Mu or the Armed Forces of a rival Complex arrives, the minute Complex Mu dies as an ideal.