I've seen it many times where somebody will block themselves into the generators on Teaparty using obsidian, so other people can't get access to them. I think this could be easily fixed by added either a bigger entrance or more than one entrance to the gen-hut thing. Or better yet, they could maybe make it so blocks couldn't be placed by increasing the "You cannot build here" radius of generators on Teaparty alone. Let me know what you think!