Sort all bank button. Do NOT deposit button like you said and and a clean out all bags and bank bag button with check boxes for what you don't want trashed !!!
Good golly, no. I hit the Sort Bags button yesterday by accident and it took me an hour to straighten everything out.
I agree on the bank sorting feature, also an option to stack harvests or other items inside the bank. as for the do not deposit..this is already a thing. right click the bag, go to bag options, there is an option to skip during deposit all (unless it's only a feature of darq UI...in which case this should definitely be a default thing for everyone)
Yes please - all of the yes please. Put in a confirmation box - even if you have to type your character name to confirm to do it, if needed. Would make life so much, much easier.