This is mostly in relation to the Sell to Vendor situation where we can only select a max of 100 items each time which makes selling items that you have 10k+ off really tedious and annoying. I find it odd that we can select huge amounts of an item in a trade with someone but can't sell to vendor those big amounts in one go. I would like to suggest for the sell to vendor that we can type in a number instead or have the dropdown menus got to at least 1000 or more. If typing a number in causes issues for other parts of the site or makes it too hard to implement, at least the dropdown limit increase would already help immensely.
Oh and a sell all trinkets/materials option would also be neat with a way to "lock" certain items from being mass sold with an extra security measure of a popup window showing all selected items and a "are you sure you want to sell all of these items?" to make chances of accidental selling a minimum. (if a locked item was selected in the sell all, the game would simply refuse to sell saying that a locked item was selected)