I'm not sure why you need to send an order to Woocommerce unless it is to sync inventory. From that standpoint it makes sense
Are uou wanting all of the orders in one place ?
I'm working on an inventory management system which will look at Etsy inventory and compare it to woocommerce inventory. Adjustments then can be made,
Some of this is in the current Zetsy program but is undocumented. The current approach is actually have this has a seperate program. Zetsy will work with Etsy files but will download the information in a manner which can work with a master Ecommerce program. I hope to release more information on this soon.