I agree that the standard assembled are hastily-composed machines meant to be fast glass-cannons with low material cost, but even the golems themselves utilize technology that is sub-par compared to, what appears to be, standard Sigix technology. But this is not a major objection, really, and has a few resolutions already mentioned.
While the z-units and assembled are in close proximity, the Golems and assembled appear to stick to there own regions, so may simply
not attack one another simply due to not really coming into contact. After all, still have to consider the vast number of dead derelicts in the Golem chamber. It may be possible to actually test this in game, with good luck; If assembled spawn in the entrance zone of zdc, avoid fighting them and instead trigger Imprinter to appear. Then, attempt to see if imprinter and company fight the assembled, or if they simply ignore one another. Another method would be to gain the attention of the z-lights in the upper or lower part of the z-facility cavern, and then move further towards the Golem chamber to find a group of assembled, and see if they fight one-another or not.
Main problem is that both hypotheses are compatible with what we can see, although I would object to the idea of Assembled having communicated with Imprinter and are actively cooperating simply because this introduces something for which we have no need of; No assembled are known to have communicated, outside of the Golems, and even this is a single message that is encrypted. Instead, the imprinter using assembled-based technology could be due to her salvaging GUs from the chamber, which would explain the mass grave in the chamber itself, and fits more simply with less assumptions.
When I said unlikely, that was a mistype on my part
I meant likely; I certainly don't think the Imprinter to be a trustworthy and forthcoming individual
Otherwise yeah, the rest of that post I agree with.
The Architects are an interesting group, and one major issue I have with them is that I'm not entirely convinced A2-9 are "true" architects like The Architect is.
First, the tile itself is quite different, as are the innate traits and abilities. The tools they use are far-above those used by the other "architects," and it has perfect command over the others with it's ability to over-write their thoughts and intentions on the fly, as demonstrated with A7. They also installed emergency codes into all of A2-9, should they ever manage to rebel; I don't think this could have happened if they were all made at the same time, from the same base, as MC originally did with
his architects. Not to mention that in that same log from archives, MC states that he destroyed all of the Architects. Him believing to have destroyed them all, with one escaping somehow, versus 9 escaping detection, I find only 1 escaping to be much more reasonable.
Instead, I think that A2-9 are/were manufactured by Architect themselves, after they escaped, with later numbers being more recently created. This could go some ways to explain why lower-numbers are stronger; they would have been around longer, done more for the Architect, and be upgraded and "promoted" over time with better tools and utilities to become more effective agents.
Tangent aside... I don't know if Imprinter was once an a-series robot or not, but I think it's not likely. Not really sure what she is... and there really is very little to go off of. I'll have to wait a bit to try gathering more information before I provide a better proposal on that issue :p