It needs feature - ability to sell multiple items in inventory should be mandatory (Let's say I promote myself to cases that no longer drop light blues) Then I'm left with junk that I have to tradeup fully, but if there are let's say 9 remaining LB's, then I have to click sell 9 times.
Trade up page needs SORT BY feature from INVENTORY section. - Currently you need to browse around entire inventory in tradeup section without any kinds of filters so purples are next to blues or light blues. Annoying when doing mass tradeups. There could be extra way to sort them, like via float since skin quality depends on Float Value
When giving review I'm around Legendary Case (Silver 1 Rank). There needs to be more features, for example special showcase for collection acquired. instead of saying. You collected X out of 52.