I like tight spaces in Roguelikes. Well, generally for games, but especially for Roguelikes. One of the reasons Prom's platform designs appealed to me so much was how compact and varied everything was.
Hence, I like small dungeons with lots of little corridors. I don't like crossing large, empty spaces in Roguelikes at all!
Haha, so you like Nethack *mazes*? (Not dungeons, *mazes* I think they come after midgame or something
)
My dream Roguelike would have very simple controls and simple rules, but lots of different items, enemies, and ways for those items and enemies to interact with the player and the environment. I want it to be very fast-paced and I want to be able to cause enormous change in the game environment without needing 50 spoiler.txt's around me!
Nowhere near intending to pretend it to be your dream roguelike, but have you played DrashRL? It has simple controls and rules, and is pretty fast-paced and spoiler-safe. Not too many nethackish interactions yet but that will eventually come