I've always liked straight-up random dungeons so I think it's fine as is. I used to make mine just like this. And it's what's inside the rooms that counts, not what the rooms look like...namely monsters to kill and booty to take. Modern maps seem to be all frilly with lots of colors and textures to make it seem real but this old-school style still has its place among us old-timers. So I can't point you in any direction I'll just say keep on keepin on.