They're both Ferrari drivers and Alonso would have been part of Bianchi's F1 preparation, with the exception of Force India and Perez Alonso possibly knew him the best in an F1 context, I guess.
Very few teams ever run the same spec twice, at every race something is new/changed. The formula still IS pretty open, just look at the cars to see that, they're very different from each other.
Certainly the reliability is better overall, I'm not sure that's as much formula-related as it is process-related. In the 70s/80s an F1 car was still manufactured/altered on the fly in metalwork shops while we started to trundle about in robot-made precision-built road cars.
Now the processes involved in designing and building parts for an F1 car are so precise and measured that reliability is much greater - particularly in engines which had the central cause of most retirements.