Yesterday's Megadungeon "best practices" prompted a comment from Darnizhaan that was worth expansion into a blog post:
Use Multi-Level Structures
It's a megadungeon, so put in some mega structures that impinge upon multiple levels, such as:
- waterways (and waterfalls between such)
- giant staircases
- huge caverns (top is effectively on one level, bottom on another)
- rooms with mezzanines and multi-level access
- towers, pyramids, and ziggurats within large caverns/rooms/etc.
Embrace the size of the dungeon and show it off with multi-level structures.
This is where your side view and top-down view both come in handy for placement.
Corollary: Don't accidentally impinge
Make sure you aren't accidentally having pits impinge on open areas on a lower level, staircases that bypass a level but are blocked (or opened to) by an intervening level, and so on. Using large structures and multi-level connections, and pits down to deeper levels, is a great way to take advantage of the megadungeon . . . but do it on purpose rather than by unhappy, oops-my-map-is-wrong mistake.
Thanks again to Darnizhaan for bringing these up!