Pretty sure it's not allowed because entities are used to impede player movement. The argument that it's allowed when they're on the fading doors quickly loses merrit when you see how some users have set up their bases. In the case of Fred it is still rather "okay", but some people practically have a maze set up where you need to walk around because there are keypads in the way.

With your argument, such bases would also be allowed? Something that was specifically mentioned they weren't?

Pretty sure it's not allowed because entities are used to impede player movement. The argument that it's allowed when they're on the fading doors quickly loses merrit when you see how some users have set up their bases. In the case of Fred it is still rather "okay", but some people practically have a maze set up where you need to walk around because there are keypads in the way. With your argument, such bases would also be allowed? Something that was specifically mentioned they weren't?