No the main thing about Kaka & Ronaldo is that they have had amazing performances in the past & many would consider those their prime moments.Ronaldo had to work on his physique & strength(Giovinco???).Kaka started to look shit because the rest of his ex team mates were shit btw.They can give alot to Real but id doubt they can eclipse their past performances,mainly Ronaldo though.As for Benzema,i hope he flops & finds his way to Juve for 13m.
The first los galacticos phase failed because they ignored the defensive department & losing Makelele to Chelsea was the final nail in the coffin.Aslos senior players like Raul caused extreme chaos by making Del Bosque's job difficult.Could you imagine if Secco managed to purchase Ronaldo,Kaka & Benzema??? Juve would walk all over Italy & Europe,week in week out thats for sure!
Btw Del Bosque got his revenge on Raul with non selection for Spain over & over again.