That sounds awesome, your effort here is much appreciated by everyone!
One more thing, it might have been pointed out before: Near the Department Store CP there are some areas without static Houses or OOB statics where you can leave the map area and wander around behind invisible building fronts. Before you regenerate a new Navmesh, you might wanna put down one or two generic houses there to plug the gap.
The lighting also could use some polishing, as direct sunlight oversaturates Tanks/Soldiers/StaticGuns etc (see the static Tiger for instance. This can easily be adjusted in the sky.con file. Additionally, some of the custom buildings seem to be not properly lightmapped, but of course you can't do much about that.