I have seen your requirement and will be glad to assist you for Hide invoice option.
please share your requirement in brief at Skype @ cis.am3 or email me at firstname.lastname@example.org
Nick here from Shopify.
This is something which is definitely a custom feature and would need either an app or custom work from a Shopify Expert. I took a look through some of the most popular invoice related apps in the Shopify App Store to see if any mentioned this feature:
It could be worth reaching out to the developers of the apps to see if this is something that is a feature or could be implemented down the line.
The only other way for this would be to implement something custom from a Shopify Expert.
All the best, Nick