Ehance T3 transfers

The extras you've added when using metrc's interface for transfers is great, especially the autofill directions. Would it be possible to make it not only fill out the directions but also calculate how many hours it will take? That way the ETA is automatically adjusted.

Since metrc just puts whatever time the manifest is being created as the ETD, it would be really cool if I could edit ETD and then click autofill (or some button for ETA) and it adjust automatically.