Reasoning:
Bringing the mark 2 variants back AGAIN just doesn't feel satisfying
The EE steps aren't really that interesting to do. Especially that damn abomination step
The side EEs are arguably top 5 worst of all zombies maps that have included them since BO2. Only good one is the crystals, but having to do the entire wunderwaffe quest and buy a chopper gunner for it just ain't it
Speaking of, the wunderwaffe quest is nonsensical in an unsatisfying way, while it's good when you get it I just don't enjoy going for it at all
For some positives, the T-Rex is my favorit bossfight in the game, I do like the liminal spaces and secret rooms you can open throughout the game being reminiscent of DotN, and the minimal elite spam is welcomed
Overall give it like a 7/10 still, but wouldn't regard it as one of the best in the modern day. I'd still put Terminus, Reckoning and CDM above it in terms of BO6. I just can't see myself going back to it much when we already have a peak mansion map in DotN