Yep, we don't have a fusion reactor and force field yet, so envy helps a lot (me at least) :-P
Actually atm my coal engine ring - 20 engines - pretty much covers all my power needs.
Trapdoors - hmmm, I tried most of these click variants. One click type cycles between wooden<->iron behavior. One - between hatch looks. Other - turns hatch to a different direction, Another - returns the painting block which u put into it earlier.
Will try more and test your hatches, if it can be opened by other players that would be awesome, thanks!
Will check out your building then. Please tell us about the nuclear incident with Ethe? Preferably - with many exaggerations and painting Ethe as an evil genius ( he can't argue while he is busy ). Or it was described on the forum? ))