This has been in pretty much every MMO I’ve played where you could combine the same stackable items into a bigger stack. I was surprised to find I couldn’t do this with things like gathering tools and salvage kits. I keep several of each in my inventory at a time and after a while I end up with stacks of only 3 which I can’t merge with something else to save room.
Another nitpick I have is where you cannot bulk buy from karma vendors. I don’t want to spent ages clicking my mouse 8000 times to get what I want..
Please consider these suggestions.