I could add more cameras, but I never felt the need since docking is so easy from the cockpit view

As for the ejectors, You are welcome to add more to yours, especially if you are mining manually, but I think 6 ejectors and 2 sorters is enough, especially since this designed to be an automated miner. (although you did remind me to re-add the 5th and 6th ejectors back in, so thank you)

This ship can be improved by fitting cameras directly above or below the connectors for manual docking operations.

Having more ejectors (at the top of the vehicle) won't hurt.

A repair projector wouldn't hurt to help repair bumps and exploded drills in the field and would do away with having to reset groups etc.