With the new enhance system people are gonna be holding on to crates and upgrading them as they get essence. If you have an upgraded crate and another of the normal kind then you can accidentally open your upgraded crate wasting your essence and progress. Make it so that locked crates are actually, well, locked. Can't open something if it has a lock on it right? Anyways, this would provide peace of mind when opening end round crates that drop as the same type as the one you are working on.