I disagree with the last three messages: the visual editor is bound to be painful when enabled; if the team has established that they're in a stage where they are done with the knowns in some areas but need more testing on the field (and feedback) to discover more, they must be allowed to, otherwise they'll surely lose time, not working on important issues they couldn't predict. I'm not able to make such an assessment, but I read today a discussion on it.wiki where it was noted how only 132 edits were made with the visual editor. It's impossible, for the community (or anyone) on any given wiki, to gain any confidence in the tool as long as its usage is at such negligible levels. VE is useless for power users, so we can only try with newbies. I don't know if new accounts are the best choice, maybe it should be triggered only after the 10th edit (we know at this point the survival rate is much better); but this can be changed any time, I guess.
Nemo