Thanks! Completed now (everything on normal).
**Spoilers ahead **
In terms of other issues, I noticed that the map always seems to have a "?" point of interest marker at 0,0.
Also it's possible through bad luck/timing to create a habitat, enter it, and already have the Group there waiting for you.
On the random comment side, I died to ambushes several times - but it gets much easier to survive them once you realise that the blackops agents don't start alerted to your presence (apparently they either can't see your host in the dark or don't mind random civvies showing up at their ops).
They're also the only real reason combat body features are useful. For pretty much anything else keeping a low profile makes much more sense. That isn't a criticism though.
I like that there are lots of sub-objectives, including hidden and non-essential things like finding the original host and developing dopamine control.
I also like the horror feel. Learning your victims' names through brain probe is a nice touch. And I like that the game doesn't tell you how to play - I started off trying not to kill people but that obviously makes life much more difficult - the safest way to play is be paranoid, stay out of sight, and murder dozens of people by starting up evolution in the sewers then running their bodies into the ground. It all really forces you to think like an amoral alien body-snatcher.
Thanks again!