It would be nice to have an option in WordPress 2.7 to completely take WordPress offline. Right now, I am using the "Maintenance Mode" plugin to do this. Such an option would be particularly useful for version testing on my local apache test platform or anytime I needed to take the "real" blog offline. The "Maintenance Mode" plugin works well for this and I can present a good offline message plus a link to my "real" online blog. Something similar in the "core" files would be nice.