If you read the supersecret.rar files, some cut story content (probably cut late in game development as this is a more recent file that closely resembles the finished game), Simon was supposed to encounter another suited robot much like himself, except it was a little less lucid and very close to dying. Putting some of it under the spoiler tag cause it's kinda long.
It's located supersecret.rar>>design>>documents>>updates.doc
The link to the password to supersecret.rar can be found in some other threads on the forum.
Since it's not canon though, it's hard to say where it fits into your discussion.
I'll add that I've been curious the whole time how exactly the WAU managed to build Simon since it doesn't exactly have a physical body. The little robot at the foot of the pilot seat Simon wakes up in is a likely candidate.
Also, the teaser trailer shows the WAU room from Alpha before structure gel creates that mouthed monstrosity that you can stick your hand into and get it torn off if you choose to kill the WAU. I'm curious how the brain that the WAU supplanted with those mechanical parts is related to how the WAU understands PATHOS II and the humans inside.