Inventory management: transfer a stack of items I just want to shift + Lclick. Sorting I just want to tap y as I can right click to bring up a drop down menu.
Omnitool: Add a 9th button to the hotbar that is only the omnitool so we can actually equip it and use left click to use it. Buggies currently love us too much and interrupt holding.
Recycling placed structures and blueprints: Sometimes I want to place a lot of blueprints to get an idea of what I'm building. Holding a button for one second to clear them out one at a time is incredibly tedious.
These are the ones that stand out the most to me right now.