@Tmekt – During the off-season, we will probably alter car performances, either based on what we can derive from the 2013 season, or how we see fit. It could even be completely random (though not so random that we suddenly have McLaren trailing around in the place of HRT :P)
As for your reliability, I would say that before our next season, we will allow drivers to re-spec themselves, as they’ll have more knowledge about what works. We certainly wouldn’t want you stuck with such terrible reliability xD