Then I guess my question is this: why is a mostly visual interface/representation mainly controlled by non-visual means? To me, a mind-map is not a "power user" tool and is used for organizing loosely understood ideas in hopes of getting a better grasp on their domain.
IMHO it should be something easy to play with, move things around, unstructured (in the sense that a user's stream of ideas won't necessarily be coming into the program in a structured way; the point of the program being to structure them), and be able to make many corrections and revisions. The goal of the tool should be to take unorganized thought and mould it into a comprehensible hierarchy that can be used to communicate ideas to others.
IMHO it should be something easy to play with, move things around, unstructured (in the sense that a user's stream of ideas won't necessarily be coming into the program in a structured way; the point of the program being to structure them), and be able to make many corrections and revisions. The goal of the tool should be to take unorganized thought and mould it into a comprehensible hierarchy that can be used to communicate ideas to others.