Board Thread:Suggestions forum/@comment-4568826-20191217012432/@comment-87.8.158.229-20191219163044

As convenient as this idea may be, you still have to remember that this is not only a LoTR mod, but one for Minecraft. So I think it'd be unfriendly game-wise since vanilla potions (both normal and throwable) cannot be stacked.

Think about the numerous (and possibly drastic) changes that this would bring to PVP in multiplayer: being able to stack previously single-use power-ups could create a similar situation to what enchanted golden apples did in vanilla PVP in a way that neglected skill in favour of stronger equipment.

Also, since from Update 34 onward good players won't be able to craft poisonous arrows at all, this would create an even bigger disadvantage for people playing in servers.

TL;DR

the implementation of this suggestion may break PVP and is generally game-unfriendly.