Thanks for the feedback! I honestly haven't been doing much with the SDK for quite a while now, but I would love to improve the map.
My idea to make the outside less OP is to pretty much just cut it off and make it a very small area.
For whatever reason I just figured it would be pretty cool to have an outdoors area.
Also, the creepyfying with green lighting and such is a great idea. I might just get to work on it.
I think the reason why I've been a bit demotivated is because the game currently is in such an early 'early access' state, so none of my friends currently wants to play it.
I know that feeling, though the game being early access also has a bright side. I use it as a time to test out my own maps and polish it before everyone else comes. If you keep up the good work, once KF2 is fully released you can showcase a well-balanced, spooky map to your friends and thousands of new players. Especially with all the new perks and additions to the game coming, I'd say your friends' chances of joining you are pretty good.
I'm looking forward to seeing map updates!