Clockwork Tunnels
Constructs: There are several Scaffolding scattered in the background, like IMF. There are also scattered bodies of constructs, as with the anchient generator, that can be rezerected by Menders.
Undead: There are cobwebs and the hue takes a dark, foggy, abandoned mood, similar to the Anchient generator.
Beast: There are several removed, scratched areas with patches of mud and grass. There are also huts scattered around.
Gremlin: Has several mechanical gears, scaffolding in the levels, background Twhackers and Schorchers mending the level. There are also some makeshift settlements like In emberlight. There are more removed sections.
Fiend: There are runes, paperwork, and alchemising equipment areas in there, as well as magazines.
Slime: Slime is rampant there and goo and spikes covers walls.
Dude, when was the last time you visited the Clockworks? Many, if not all, of the things you mentioned already exist there...