Matching interface

Considering the problem of matching fields that obviousely cannot match (for instance, field in a source that doesn't exist in another), and accepting the fact that software editors will never agree on a complete contact scheme, wouldn't it be more realistic to consider the following idea :
In a new "Property" page, allow users of Soocial to determine the matching of every field from a source to another (or from a source to the central database in social).

Which means creating a complete contact scheme in soocial, with a maximum amount of fields so that each particularity of each source can be synced with soocial, and then the user chose where to sync an unexisting field in another source.

Am I dreaming ?