Re: The special unit view
I think the mousewheel button (i.e. clicking it) does the same except you don't have to have the unit selected, just hold the wheel on it. But the zoom isn't all that great. Often cuts part of the unit out.
Re: The special unit view
Middle mouse is different, it's a set zoom level.
DEL holds and follows the unit (and it's projectiles) at different zoom levels and angles, chosen by you.
It's not necessary to have this available in cined because you can waypoint the camera to do the same thing without pressing any keys at all.