After waiting a month... it arrived!!
Yes, GPC makes custom cases.
I am glad I had GPC make this and not another cheaper case maker.
This thing is excellent. It holds my Spark, 4 batteries (1 in the bird) spare props and Remote WITH Mavmount installed.
I opted not to make a place for charger and prop guards as I always leave charger at home and haven't used the guards one time yet.

Here are 2 pictures of the finished product and the drawing they made it from.
I designed it and they built it.
They are very reasonable on pricing for custom work.

I just got the standard 5 battery case in after waiting a month for it. It's very nice. Looks like I can slip my iPad Mini 4 under the foam in the lid.

Good case. It is really convenience. Thanks for sharing.