Sounds like a good idea Tobias. Have you seen Jon's EditFieldsPlugin[1]? It allows a user to easily define new custom fields to any tiddler whilst in edit mode. It might be a useful starting point.
Colm [1] - http://tiddlywikidev.tiddlyspace.com/#EditTemplateFieldsPlugin -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/tiddlywiki?hl=en.

