Good morning,
With NNW's OK, I have made OWC-ND Expanded Dungeons compatible with Snu's Dungeons,WIS Better Dungeons and Ayleid Ruins Expanded. All I did was delete any cell that conflicted with those three. Surprisingly, there were still many cells that weren't affected by them (especially the Forts which this mod does alter). However, I don't want to post it on the Nexus until I am able to test it out more thoroughly. Anyone wishing to assist, the file is below. I don't anticipate any problems as all I did was delete conflicting cells but you never know. Additionally, as I check some of the more popular big mods, I may make more edits if there are conflicts.
Martin
https://www.dropbox.com/s/3poj5k4x202ce2u/OWCND-Expanded%20Dungeons%20-%20Play%20nice%20edition.esp?dl=0%E2%80%8B