Neat. It is always a balance between the convenience of being able to fly quicker with the props on versus the probable smaller platform of a smaller case which can serve to be utilized on an aircraft or even less space in a vehicle. I suppose several will opt for a case which can have more storage for multiple batteries and other accessories. Good luck in whatever you come up with... It may end up that a person needs one of each type of case. Especially for someone looking to put the H into the overhead bin of a airplane. If in the luggage hold, it will have to stand up to the abuse of the baggage personnel.
Compactness for me too. I mostly take mine on my motorbike unless I'm going on holiday in the car or doing test flights at the local sports field.I would say "Travel" as it is more compact therefore making it easier to transport. I take my drones with me on the back of my motorcycle so, "compactness" is a necessity or at least a consideration in my purchasing decision.
Also I would imagine a "travel" sized pack would cost less as uses less material (probably marginal)...
A $189.00 soft backpack that uses the OEM foam? Or a soft backpack that doesn't use any foam?
If it doesn't use any foam or offer protection, it would be a non-starter for me. I would rather have a pack that physically offers protection for my drone rather than compactness and lightweight. And a softpack that offers no protection for 189 would also take it out of consideration for me.
Good Luck! (and thanks for the prompt shipping on my battery!)