Here's an idea I just had to make Inventory Management easier.
1. Select All. The game already sorts items automatically using tabs. Provide a Select All button so players hot the button and all items of that type are selected.
2. Multi-Select. Provide a button or hotkey to enable Multi-Select. While enabled, every item I select remains selected.
3. Fast Sell Option. Once you unlock a vendor, that vendor's name pops up on your Inventory Screen in a Vendor List. When not in a dangerous area, the vendors available highlight so you know you can use Fast Sell. Select all items you want to sell, click the vendor's name, Select Sell. Done. All items you selected have been sold. No need to Fast Travel to the grove to sell. You could now do it on the road. However, you can't Fast Sell with Dammon the tiefling while in Ethel's lair, spider lair, goblin camp, etc. However, you would probably be able to Fast Sell with the goblins only while in the gobbo camp.
4. Fast Buy. Same as Fast Sell except you click vendor name and select Fast Buy. Their inventory pops up (no pictures of the vendor are necessary. Just items is fine. Actually, no item picks are necessary either. Just item names listed. If I want to look at the item listed, then a pic pops up. This would make it so my screen stops lagging when I'm at vendors). Pick items to buy using Multi-Select. Boom. Done.
5. Auto Send To Camp. Same as now except make it a button to enable on each item inventory tab. Want to send all food automatically to camp each time you exit a dungeon? Enable this feature. As soon as you leave the hag lair, Boom. All food is auto sent to camp. Want all useless silverware sent to camp? Same.
6. Retrieve From Camp. This would open a single camp inventory popup so you can Multi-Select items from camp you want to retrieve. It could be similar to backpacks, etc. When you have selected the items to retrieve, click done, and boom. Items retrieved from camp. No need to go there and open the chests manually.
7. Sell Camp Items. Same as number 6 except once you select the items you can simply sell them to one of your vendors as opposed to retrieving the items and lugging them around.
