Being able to see the gate-map during a run
Sometimes on my runs, especially the lower tier ones, I want to pull up a gate-map while I'm on a run. Mainly to see how close I am to the rest stage or the next town. By being able to see how many more depths I have to go through, it would be easier to decide how to allocate my energy -- eg: open these energy doors or save the for energy for another level. I've been doing runs down to try for recipes at the rest stages, so knowing how much further to go would be especially helpful.
I could just write it down when I go through the gates in Haven, but having a way to pull it up from inside a map would be less immersion-destroying and more convenient.
I'm not sure if a way to do this currently exists -- if it does, I've been blind and please let me know.

The gate map should also snap to your current depth, rather than defaulting to depth 1. The extra bit of scrolling is annoying; it's the little touches that make good design great.
Ah, thanks for letting me know. That will save me some grief in future runs.
If you click the menu tab on the upper left of the screen, there is a gate map option.
It should have a hotkey though.