Aye - the door controls are a bit hit or miss, especially when you are in a small corridor. I experiments with auto opening (i.e. a simple pressure plate) and that worked quite well, but I went back to the press E to toggle for my final build.
Thanks for playing and the comment! I am very keen to keep working on this and have a tonne of ideas on the drawing board and the cutting room floor. If you have anything you'd like to see, ping me a message and I'll see what I can rope in.
Thanks again.