Picked up the 20th Anniversary edition of The Big O and did a rewatch since I haven't seen it in like forever.
Yep, this is definitely a Chiaki Konaka show with mindscrews galore! I love it though as the show just oozes style from the characters to the mech design and the soundtrack. Knowing the ending ahead of time definitely helps makes sense of what's really going on and you can see all the subtle foreshadowing even in the first couple of episodes.
It does bother me though that the 20th Ani edition replaced the awesome original two OPs with a blander one (presumably to avoid copyright). That really makes me sad.