I began to write MyAdvogato to offer an interface that made certifying more scalable, the three boxes idiom and the summary were its main raison d'être. That's why those were non-optional modifications.
I think, however, that nowadays some people could be interested just in some of the new features, as username highlighting in recentlog. Thus, in the next release users will be able to leave the original boxes as they come. It sounds kind of strange to me, but I believe that is the next natural change.