The SC: the problem is the AI file which determines where the AI drives, brakes etc. In Hockenheim it worked brilliantly, but for the majority of the season it's been quite unreliable.
If there is some tool which would allow us to easily record driving lines and braking points for the SC then I'm confident we wouldn't have any problems like this in the future. But until then I'd be in favour of not using the SC.
Also a Human SC is not a good idea because then the game would not give the drivers any messages when the period starts, what position to take, when the period ends and so on.
Startlights: On most tracks we've had multiple sets of startlights but I guess we don't have them here. If you can't see the lights then there is one more option. You can scroll to the ingame LCD screen which shows the racetime clock (the one that says how long the session has been running). When that clock starts running, you'll know the lights have gone green.
Edit: actually there are more sets of lights on the lefthand side of the grid.