We are listening and would be glad to assist you in this regard :)
We also have some good news for you. Google Map Maker does not rely on Postal zones for driving directions. On Map Maker, the location information, or simply address is collected using the following hierarchy.
3. District / County
When these polygons are marked correctly, any feature marked on Map Maker automatically gets populated with these address attributes. For example, consider the example shown in the screen shot attached.
This is a railway station marked in Pakistan. The polygon(s) under which this feature was marked populated automatically in their respective fields i.e. under the 'Location Info' the 'State', 'District/County', 'City' fields were populated with the names of the polygons as the feature was marked in a location which was encompassed by them.
The mapping, State -> Governorate seems to be fine. Going down to Districts, Cities, Locality and Sub Locality mapping is where i see that we might have an issue.
So, it'd be great if you could propose a model for mapping Kuwait address hierarchy with respect to Map Maker administrative features. You may also want to visit a thread where we had a similar conversation with mappers from Costa Rica:
Map Maker Guide.