Actually I don't get it why nobody is producing a case like this. Small, with room for more batteries and with charging IN THE CASE. Just plug it in and charge everything at once. I'm happy with my case mod :)
I use the shoulder bag when going out to shoot footage, but I made a custom case to keep + charge everything at once, in the case itself:
Inside are 2 chargers, 2 hubs with 6 batteries, RC, phone and cables tugged away out of sight.
Having bought the fly more combo + 4 additional batteries and an extra hub charger I couldn't find a decent case. I prefer to keep everything in a tidy case, with the possibility of charging all of the batteries (6), the RC and the phone while kept in the case .
So I ordered a small Chinese case...