Meh, I wouldn't mind Glock, Kovalainen, Kobayashi, Petrov, Senna, de la Rosa and Karthikeyan being swapped with rookies like Guiterrez, Frijns, Valsecchi. vd Garde, Calado, Ericsson, Clos, Magnussen, Chilton, Razia and Bottas.
Half of that list of rookies aren't good enough for F1.
Ericsson was a huge let down in GP2. van der Garde a disappointment almost every season in single seaters really, bar that WSR winning year. Clos was never quick, only solid at his best. Chilton nowhere near good enough except for some progress this season even then hardly convincing. Valsecchi and Razia have come good now and maybe - MAYBE - deserve a shot, but showed very little every year until now.
I'm all up for trying new drivers sure... but only as long as they're actually promising.