ok nobody responses
but here are my two cents about the observer mode:
in all big tournament games for the last ~10 years (e.g. warcraft 3), people playing a tem game didn't lose until the whole team was defeated. so imagine a 2on2 tournament with poeple being in teamspeak. it would be a real cheat for a team to have one of the player observe. it would be dangerous to defeat enemys
or even 4on4 games, where very often one player of a team is slaughtered quite soon because everbody goes 4vs1. after ten minutes, both teams would have full vision! that is crap.
so really would prefere the method metioned above.
the full observer mode could still be given after a team lost completely (like in a 2vs2vs2)
so this quick and dirty observer i build for my post before, could still work
just until a real observer slot will be created.