Ever considered a FURMAN? its not a bag, BUT...it comes with a hardshell top that snaps down, and even has those luggage styled wheels...you just pull up the lever and drag it where ever you need it. when packed up it looks like a weird suitcase.
reason why i got it was because of the Power Conditioning feature, you can plug everything into it basically(Guitar Amp, Pedals, Music Stand Light!). the power conditioning feature really killed the buzz problems i'd get from my churches quirky electrical outlets. the pedals velcro to the board.