I noticed that the overall time to create a stack of five bone pastes with the Batch Bone Paste recipe takes ten seconds *longer* than if I were to use the normal Bone Paste recipe, which is unfortunately math I made after I had already purchased the batch recipe. Since I feel like a batch order should arguably be a bit more efficient than the standard individual one (or at least as long), I think possibly changing the crafting time would be great!
I agree with Veradana. You get 1,050 xp for 25 minutes of crafting. I'm indifferent to the time it takes, but I certainly wouldn't want the xp reduced, if the time were to be.
Agreed with veradana, and to add, you also gain the convenience of not having to manually start a new batch every 50 seconds. 10 extra seconds is a very small price to pay in that sense in my opinion.