Move accounts between mailstores

Hi all,

I was wondering how you would go about moving accounts between mailstores on a multi-servers Zimbra install.
Something similar to zmmboxmove on Zimbra NE, not really a one shot move but more like something we could use on a regular basis to distribute the load as our infrastructure grows.

I guess we could script something around zxbackup export/import and rsync. Or zxpowerstore's blob move, maybe
Perhaps someone has already ?

Is such a feature planned for future Zextras versions ?