There have recently been upgrades to Robo Rally (no mechanical arm) and several to AA & AA42.
If you still want to be able to watch a game, perhaps email Rob to remind him.
He submits requests for programming fixes & upgrades.
I imagine this upgrade could be implemented in a variety of ways?
a) unlimited watching (not a good option IMO)
b) table creator sets option to watch - with default being no watching
c) prospective watcher sends request for ability to watch
This may need to be implemented for each game - not one global programming swoop.
Therefore, it may require more time than we know, though it never hurts to ask.