Use related fields in a Chart

Looking at https://support.geocortex.com/essentialsGSCForum?sub-nav=forum&main-nav=essentials&#!/feedtype=SINGLE_QUESTION_SEARCH_RESULT&id=9066000000006EIAAY
and the answer from Amanda I would like to promote this further.
Apparently there is allready a request for this, GE-6068, so please....
The idea of using data-connections and -links doesn't work on a file-geodatabase (which we are using a lot) and why not use the related table-method.