Players' perspective as a spectator.

quote: - see what they can see on the map without seeing the stuff from his enemies).

/SpecFullView

There's are settings for spectating somewhere under settings (interface, probably). The main issue is that if you disable fullview then you can't easily switch between teams unless the 'enemy' team has units that are in los.

Seeing unit selections is under settings->interface->selections. Most/all selection widgets have an option for viewing allyselections, which also works for all players when spectating. I find it works best when using team-colored selections, since it makes it easy to tell who is selecting what.

Seeing the player's cursor in UI would require perfect camera following, which exists but is not really supported (for lots of different technical reasons, and also camera info is not stored in replays by default). There's also an option somewhere for following the player's cursor, and a hotkey for it but I don't remember where any of that is. I find that option to be more of a pain in the ass than it's worth, since you end up missing out on most of what's going on.

quote: The only issue is that limited SpecFullView doesn't seem to fully update the information when changing players without going into unlimited view, but I'd have to test exactly where that still comes up (IIRC it affects the set of visible minimap dots and the colouring of the mex circles in the F4 view).

Yes I've seen that. Switching players does not correctly account for what the other team has seen, so you get ghosts and identified radar dots and other things which shouldn't be. Also sometimes it produces screwy permanent radar dots and other artifacts.