Given our delivery timeline of February 2017, we unfortunately are unable to make any more changes to the type of ports on the HyperDrive. The ports on the HyperDrive are chosen because they are arguably the most popular and often requested ports.
We appreciate that there are many mini DisplayPort fans out there but many of the same fans have also indicated that they are getting the newer Thunderbolt 3 displays like the LG UltraFine 5K Display when it is available. We do have a mini DisplayPort solution on our web store at https://www.hypershop.com/collections/usb-type-c/products/hyperdrive-usb-type-c-hub-with-mini-displayport
An Ethernet port will not fit into the slim profile of the HyperDrive which is as thin as the MacBook Pro. We appreciate that while an ethernet port may be essential for some, the mass majority of users are very comfortable with wireless WiFi.