Append/prepend only to first/last token

I'd like to be able to append/prepend to only the first/last token in a list.

Example
Wrong: Victar Mas ha actualitzat els perfils de John, de Joseph i de Mary.
Right: Victar Mas ha actualitzat els perfils de John, Joseph i Mary.

Inversely, it would be good if we choose to append/prepend to all tokens as well.

Please vote up:
http://geni.zendesk.com/entries/468106-append-prepend-only-to-first...