Headcanon good ending for Simon 3 (spoilers)

[Silver]

So after having finished the game i was trying to think of what Simon 3 can do after the credits start rolling.

The first thing that came to my mind is that the launch dome is underwater. There's gotta be a reason for that, the most obvious being that the gun prevents a seal and so it may be possible for Simon 3 to make his way outside by forcing open some loose panels without having to reopen the pressure chamber that leads back into phi and requires an omnitool to operate.

If Simon 3 kept Sarah Lindwall alive, all he'd need to do is find a way to tell her he is alive, maybe by banging outside tau in a specific pattern to let her know it's not some sea monster. Sarah's computer has the ability to lock and unlock sections of Tau, so she could be able to let him back in through the airlock that leads to the transportation tunnel, thus avoiding having to deal with Jin Yoshida in her state. Now dont give me that crap about her having 60 seconds to live the moment she unplugs herself from the IV to feebly walk down and manually activate the airlock, I'm sure she can think of some way of doing it.

Now, once Simon 3 is back in Tau's living quarters, he could task her with repairing the omnitool (according to the SOMA wiki, Sarah Lindwall is an aerospace engineer and payload technician, so she'd have the skills) Or find a spare omnitool and transfer Catherine's cortex chip over to the new one.

With that, he could then head back to the lift, which after all is now at the bottom of the ocean and hence there's no need to notify Omicron to lower it; then ride it up, meet up with and revive Simon 2, and the 3 of them could then scrounge the other stations for enough food rations (believe me, i saw enough mess halls full of the stuff) to return to Sarah and get her off the IV and nurse her back to health. If there is a spare Haimatsu power suit in Tau or Phi, she could be brought back up to the plateau as well. Edit: The body of the original Catherine Chun in Phi is wearing a Haimatsu Suit, sans the helmet.

Once there, the - now four - of them could go back to find Amy Azzaro if Simon 2 had kept her alive. With the WAU being poisoned she might either be dead or they might be able to get her off the "life support" without killing her.

Robin Bass can be salvaged near the doors of Theta. And then there's Javid Goya who can be picked up in Delta. I'm sure he'd snap back to reality seeing so many people. And finally we have Carl Semken. He can be fixed as well.

So at the end we have a team consisting of Simon 3, Simon 2, Sarah Lindwall, Catherine Chun, Robin Bass, Amy Azzaro, Javid Goya, Carl Semken and a handful of K8 Universal Helpers to form the basis of post-launch civilization on earth. Since Sarah is mortal, she could have her mind scanned and transferred into a UH3 or a suit in a corpse with some omni gel. And nobody would need food anymore. Assuming the gel doesnt become useless with the WAU's death, they'd soon find a station without monsters they could reclaim and power up and maintain for maybe a century or two and have their own ARK at the bottom of the sea. And eventually try visiting the surface, maybe find survivors in bunkers and whatnot. Happy End.

[Slithersy]

The Omnitool should be working fine. The only thing that is claimed to have gotten busted is the cortex chip (judging by the code of the game indicating so) - meaning your Omnitool should theoretically still work. There's even a cut ending where you can go back inside of phi.
In reality, Catherine is the one who is supposed to die because her cortex chip gets overloaded with extreme emotion causing problems. (for a bigger robot, like Simon, it's less of a problem). It may be possible Sarah Lindwall will be able to fix the cortex chip but generally unlikely, it probably sustained severe water damage - though judging by the WAU's slow death if you killed it or normal existence if you didn't, there's no reason you shouldn't be able to try to use structure gel found in the facility to fix it just like you did for some chip at Omicron.

For the climber (the lift you mentioned), it is claimed it can only be operated from Omicron, so ascending wouldn't be possible unless Simon2 woke up and activated it somehow. - "The Climber extends 4019m from Omicron into the Omega Sector. It cannot be operated from there, requiring a scheduled arrival or departure from Omicron.". Though it may be possible to climb the rig of the climber manually all the way up to Omicron slowly.

For all of the later points you made, they are possible. It is kind of nice thinking of SOMA which such a nice ending haha.

[M@x]

Thinking too small. With the WAU spreading and learning, it's possible Simon witnesses the dawn of synthetic organic life on earth, maybe even guides its evolution... Might also become a Scorn-like hellscape.