My idea is basically just…allowing us to make special categories in our inventory that won't show up in the flea market drop down menu, and allowing us to move whatever items we want into them, and also creating a Vault Tab where we can move truly valuable items to put them out of sight, out of mind.
For instance, I kind of want to collect Ashes and Obsidian Stars for one of my future packs. With this feature, I'd be able to sequester their riches into a special category, either automatically if this applies to all items of a type, or manually, if it only applied to a certain amount.
Similarly, when I had my Bracc Scroll in my inventory, I was pretty paranoid about doing something stupid with it. If there was a tab I could hide it away in, I might have been better able to resist the temptation to use it!
I'm not too sure how hard either of these would be to code, but I really would appreciate some support on this.