I'm kind of surprised this idea hasn't been floated around before as an update and somewhat explored. My guess would be maybe it was, but that was too long ago for the current staff to remember/it got passed over or ignored and therefore forgotten.
Here's hoping that players can hear a yay or nay on this accidental QoL once the internal debating is settled.
It's been raised a few ideas, but it's a big balancing act to consider. After all being able to use stuff straight from the Bob increases the amount of stuff you can craft in one sitting, which changes the xp/hr of that task. Apply that across all possible such crafting tasks and it becomes a really big job and one that ultimately changes up the meta of the game too dramatically in most situations.