Possiblity to merge field defined in different policy settings documents.

I would like to deploy policy settings for users. It would be great if settings which can be multivalued could be merged from a few policies.
Example. Dynamic policy whis is assigned to user A have custom setting for notes.ini enty NAMES with value "names.nsf,namesB.nsf".
Second dynamic policy which is assigned to user A have also custom setting for notes.ini entry NAMES with value "names.nsf,namesC.nsf".
So currently user will have notes.ini entry NAMES=names.nsf,namesB.nsf or NAMES=names.nsf,namesC.nsf depending on which policy have higher precedency.
I would like to user A have notes.ini entry NAMES=names.nsf,namesB.nsf,namesC.nsf which comes from merging policy settings from to dynamic settings.
It would be great if there was a check box in third column in policy settings document next to enforce and inherit called merge.So if there are other policies with "conflicts" values but setting can have multiple values, and have merge option selected, this particular setting would have two values or one value with supported separator like in example.