Just spoke to a rep and how can these features not be available?! I would consider these priority.
1) We have 2 warehouses. When warehouse A is out of stock of item, but Warehouse B has in stock. I want to set a rule so that when Warehouse A has 0 stock, it will tag Warehouse B. How is this not available? Warehouse A is main warehouse which prints pick list of all items in orders section. Yet they don't see when an item is in another warehouse. There must be a way for this!
2) Rule to set for QUANTITY INVENTORY. How is there so many rules, yet not one for quantity of inventory. There is quantity for order but not inventory. So when I want to set a rule, when inventory = 0 or less than 0, tag or do whatever. How is this not available?