I can imagine some scenarios where crafting could be key...

You have 300 seconds to craft a specific shield before you take an unhealable amount of damage and die...
You have 15 seconds to craft a bolt of cloth before someone elses wounds kill them...
Everyone is silenced and the only way to remove a status is to craft a certain potion...
You need a pile of lumber to make a raft before the room fills with water...

It seems like there could be endless possibilities. It would be awesome if they could find a way to integrate crafting into raiding.