I kind of like the sort function. A few more sort modes would be good though, like group sort and type sort. Group sort would sort on group (components, engines, raw resources, etc) first, then level and last item name. Type sort would sort on type (computer core, power converter, power generator, propellant, crystal, gas, hydrocarbon, metal etc) first, then level and last item name. The vault could be sorted according to different modes each time the sort button is pressed. You could even have one reverse level mode where you get high-level stuff at the top of the vault and low level stuff at the bottom, preferably combined with group or type sort.