I feel like a good idea would be to add a backpack or some sort of item that would increase your inventory by adding more slots. But instead of It taking a spot in your armor slots, it would have it's own slot.

I think the glider spot should be changed to a utility slot. So that way you could carry a rucksack, air tank, back shell(cause back attacks to be blocked, cape or other such items. I spend more time on ground than in the air especially once hedge is completed