Bulk order is a great feature and must think seriously to be included in the plugin, especially when you have a lot of orders every day.
If you have 40-50 orders every day then this would be annoying, spending too many hours.
I have an experience with AutoDS plugin(for Amazon) and has the ability to Auto Order immediately after payment received.
Hope you include it in your following updates, because this is a must if you want to expand your business to other selling networks.