I think making it so packs get sorted alphabetically would make finding stuff in your inventory much easier as you could get a general idea of where a specific set is much faster, instead of having to go through all of them or memorize its position.
There is a search bar at the top where you can search for a specific item by name B)
Thanks for the prompt answer. You're right there is a search bar at the top, however it does not allow you to search inside each of the sets at the same time. That's also something that could be improved tbh. Either way, the search bar being present is not really pertinent to the suggestion. There's no real reason for the sets not to be sorted alphabetically, or at least have an option for it like the "SHOW EMPTY SETS" checkbox. I think it would be a valuable addition to a fairly outdated inventory UI.