I would love to be more interested in the dungeon that I'm running, and would love to see more mechanics in the run. But complicating the mechanics will increase the margin of error, and by extension, will increase the toxicity of the community. How many CT runs have you been on where you wipe on King Behemoth, and then the parade of "WTF HOW DO YOU ALL SUCK SO BAD" messages begins?

And honestly, I'm not even totally convinced that the player base would enjoy these dungeons. These days, most DF parties devolve into brute forcing their way through fights and ignoring the mechanics that are there. (Pyretic on Five-Headed Dragon, for example, but that might still be an issue of ignorance rather than stubbornness)