Regarding the Meta Car Issue, I think, as Maximilian Kroll aka VQS_Iceman mentioned during an interview, on BoP it would be worth a shot to have additional car setup per track and not just power and weight to make the cars more equal on each track.
It happened last year on a GT-Open race on the Hockenheimring. The team manager of the Ferrari team was in a mood to give us a little tour through the box, and he mentioned that the Ferrari would not be competitive in this race because of the BoP regulations. Sadly, the cars weren't even close to fighting for a good position during the race.
So it seems that also in the real racing world, cars are not always competitive on each track.
