if i were asked to come up with a list of sorting features for bags and banks this is what i would come up with...in 5 minutes:
consumables: sorted by type and from lowest quantity to highest quantity per item
materials: sorted by crew skill, in order of grade and from lowest quantity to highest quantity per item
weapons: sorted by type, in order of rating
armor: sorted by type, in order of rating with the option to keep 'sets' together
the ability to sort each bag and cargo bay separately but it not quite as important as what's above.
to properly address bag sorting you should've hired someone that is clinically OCD like myself but instead, you decided to half @ss it with ideas from someone who doesn't even play the game. whatever need to be done to do this correctly, i would've made sure was done before it was released...a year into the games life.
i love when the community does the game developer's job for them, eh? they're a professional game developer so replies that have any references to how difficult or time consuming coding a video game is are completely moot.