The Retainer Dance is so incredibly clumsy. It's the epitome of menu hell. Click retainer one, whoops I clicked retainer two by accident. Escape, wait for animations, click retainer 1, click item storage, click retrieve quantity, whoops clicked retrieve all from. Send to retainer, no not sell, ugh. Escape, buyback, escape, items, split a few off, return to retainer...

Okay, maybe nobody's that clumsy all in one interaction. But the amount of fidgeting I feel like you have to do to do anything with retainers makes storing and retrieving things a real hassle. It's not game-breaking, but it'd be one of the biggest quality of life changes they've ever made if they let us craft or glamour from retainer storage.