Can we have an option that completely clears the screen of all HUD elements and goes into a first person view where the player’s ship is also hidden from view?
A first person mode is not plannned.
Not even a cinematic cam mode for invasion? Eg you cannot interact with anything and nothing can interact with you.
Otherwise, just use alt h to turn HUD off and fly invisible in a tackler is the closest you’ll get. Or zoom out really far from tiny ship using free look and alt h. 
A first person mode is not plannned.
Just copy-pasta zoomed camera to the front of the ship.