I am setting up a nice power station on the river, should be able to provide enough for whatever anyone wants to build and then some. I would estimate upwards of 1500 power will be available for use, with more easily added. After all, we need to add some gears to sparkgear...
Edit: A note to future rulers: there are a pair of raw adamantine coffins in the mason's workshop on level -12, about 1 screen n-e of the main stairwell.
Another note: the power station has a red lever next to it. This level can be pulled to cut off all power going into the fort from the location. Just don't keep it off for to long after my character dies, since it also cuts off power to the mechanisms in his tomb, which would make him very bored in the afterlife.
Edit 3: I added a bunch of gear assemblies all the way down the main stairway shaft, so power will be easy to access from any level. There is 2300 power overall, with about 600 or so of that lost to the friction from the gears transfering it around. So there is plenty to go around!
Edit 4: Using an artifact door worth well over 400,000 I built a nobles room. The door has enough value that I was able to not only make their bedrooms the same room, but also to make their tombs, offices, and dining room all in that same room!
Edit 5: Added a pit out from of the main entrance with grates, got a few rooms down below hooked up in a sort of gladiator arena/drowning pit. The levers for the doors are in the rooms which are the same shape (but rotated) as the rooms to which they are attached. The lever for the grates which drop them in is to the north of the entrance. In addition, I added some fortifications north of the trap covered entrance as a last resort fallback position if they manage to get past the corridor of traps.
'Skid' seems to be very resilient. So far I have accidentally dumped him in the river, nearly drowning him as well as dropped him off a couple floors, resulting in multiple yellow wounds. And that's just what happened while I was watching! All his wounds have healed, and he is right back to mining again.
To the next ruler: Be careful with the elves. My tree cutting seems to have upset them, and I apparently offended them by offering them a wooden harp (as if they didn't have 10 they were trying to sell to me).
Edit 6: The flooding part of the drowning pit/gladiator pit out front of the gate has 2 levers. The one on the left is for the pump which removes water, and the one on the right opens the door to let water in. The lever by the channel of water going to the pit (east of the pit, and one level up from the bottom) is to a floodgate which blocks off incoming water.
After the grates to drop stuff into the pit are done being linked up, I think I will be done for the day... However, with the framerate hovering around 30 it could take awhile...
Edit 7: Got all the grates queued up at least. I have played for about 1 year now, which IMO is enough for me. I have no more project ideas, so I will be uploading the new save shortly.