Ok, it took an extra day but I finished it. The lighting in the garage is terrible so I set up in the living room to see what it looked like really.
I think I've got enough terrain to safely cover an entire board and I have gratefully retired the Evolution Chamber which I always sort of hated.
The fixtures and fittings took the longest. There's a huge amount of detail on the Kill Team terrain, which is great because it almost paints itself. However, I completely misjudged how much time it would take to weather the brass and iron furnishings.
I'm not going to bother basing the ruins because it will take too long (and I want to keep it modular for Kill Team) but this allows me to do interesting interactions with other bits of scenery.
Now I have to finish my Munitorum Armoured Containers kit. I want to put Red Scorpions heraldry in there to show that its a Nids vs. Space Marines scenario. Additionally I'm going to use this as my display board at the tournament. I put about 20 hours into this, I really like it and so I reckon I should use it.
I couldn't quite replicate the darker blues of my original sector mechanicus terrain but its not a glaring mismatch and at some point you've just got to call it done.