I kind of think assuming "add to circle" should mean "grant access" is more appropriate on other platforms. That's how I thought on LJ, because I had no other option.

I like it as it is. It's appropriate for the new model Dreamwidth has given us -- with a split between subscribing and granting access. Adding to my circle means adding to my reading list. Who I grant access to is an entirely different affair. I don't want that box checked by default.