Diablo 4 has a big, small problem: inventory space. There’s just not enough of it.

Among all the other cool things coming next year in Vessel of Hatred, Diablo 4’s first expansion, are a number of fixes designed to help players with the endless bag-space management task that is, perhaps, inevitable in Blizzard’s loot-explosion action RPG.

However, it turns out implementing a key player-requested feature—a loot filter—is harder than it might sound. Developers are working on it, Blizzard told us at a BlizzCon interview, but it may not appear soon.

“We don’t have a date to announce on the filter, and the reason for that is—let me back up just a little bit here,” Diablo 4 game director Joe Shely said. “When you think about the changes we made to experience in Season Two, when we talk about that, we say 40% faster leveling, which is correct. We have data that shows people are leveling faster and so forth. But we didn’t just go in and change the number …