You can already put containers (bags, boxes) onto crafting stations and they will use the contents of those containers in the crafting attempt.
We most likely won't be allowing one to put an entire bag/box into an ox without emptying it first. Oxen are limited to 40 items, Bags and boxes can hold up to 35 items, and potentially all of them could be stackable, which suddenly changes the max. number of items on an ox from 40 to 14000. This would certainly lead to maassive amounts of lag as the ox pack was removed or loaded as all of the contents are being written to/read from a database.
Oxen are intended for CNR transport, not long-term storage.