Why would I want Pellegrini sacked? You can check my posts on him, I think he did just plain brilliant at Villarreal and though I don't like his grin or look o the bench (too evil, fits Madrid) I don't wish him personally any bad. So no, I don't want him to be sacked just for the sake of it. I do want Madrid to win nothing, of course. But that's not linked with Manu in person.
I still don't see the problem with Pep. Check the summaries of our first two games. It was the same as later games, energetic with some good chances. Just unlucky, we didn't play bad at all. Plus at this point in 08 we had 13 out of 18. Is that so bad to be sacked? Neither is 15/18 of course but the play on the pitch is imo. That's the difference, if you would play all your games like 2nd half Tenerife, it takes the pain away from a bad result.
Of course the quality of the new players is relevant. Not to adapt but to make the difference. Which is what Ronaldo did so far goalwise. It's not that you bought half a new squad full of newbies. No, the most recent ballon d'ors etc. So they will always do something more special than just a new decent player (except Alonso, no idea what's wrong with him. It doesn't seem to work on all aspects so far). Thus I do think that the individual quality of the players is very important here since that's what got you the 6/6 and 15/18 so far.