So, I just started my own roguelike. I plan it to be a rather small, conventional RL, so hopefully I will be able to finish it sometimes.
It will feature a rather big static central region based on a real world haunted castle in Hesse, with only a hand full of procedurally generated regions branching off.
There will be a simple inventory system, half a dozen different hostile creatures with different AIs, and a simple quest system.
And procedurally generated fog for outdoor regions.
Right now, I have finished a very basic game engine, I can move my @ around and LOS is calculated, and there are zs (zombies!) that shamble around and begin to hunt me if I come too close to them. I think I will work an a simple combat system next.