That's a cool idea, but I haven't really implemented something like this for BELLONA yet. I've tinkered with some ideas, but haven't settled on a form that works best yet. I think adapting something from the D&D board games like Ravenloft or Ashardalon would work. I've used their tiles in my own dungeon delves, and they're meant to be drawn randomly, even if I've just used them to create an interesting dungeon to battle in. Other than that, if you're using 1 inch graph paper, you could probably borrow the generation system from Four Against Darkness to generate random dungeons. For sci-fi, I actually took my set of space hulk tiles and numbered them, then rolled dice to build a random dungeon. If / when I make my own system for random dungeon generation, I think I'll take inspiration from IGG's Beneath The City Unsleeping which has an amazing die roll to deploy monsters mechanic that I absolutely love.
Thank you for the feedback!