Hi, Patrick.
That is, for sure, a very important plugin to develop.
I wish I were able to, but un fortunately I'm not. I have skins in html, js and php, but not that good.
Besides, I think custom fields according to user type would be a great improvement (i.e.: "VAT field" for professionals, "personal interests field" for private users, ...)
Hope you or somebody can do it.
I'll be a client.
Good luck.