In past games I've been annoyed/board at how linear the map ends up being, with very few loops. This results in boring "terrain" from a strategy perspective, where you and the enemy can only attack each other on a single avenue. I'd tried tweaking the map settings but hadn't had a ton of luck. I used SM to rapidly explore about 50 systems and still wasn't getting many if any loops.
In my 2.5.1. game I tried tweaking the map settings some more, and I've ended up with a very interconnected map. In hindsight I think it may be because I didn't use SM to explore, and as a result the NPCs are ALSO generating known space simultaneously, and maybe that helps? In any case, here's where I'm at so far. As you can see, many, many loops. The downside is it makes it very difficult to display in 2D or think through navigating it. Sadly that's a limitation of the human brain, or my brain at least
This one makes my brain hurt a little.
I do wonder if there's a way to have the game generate maps with more loops than normal but limited line crossings.