Higuain is shit, period. People need to stop defending him by saying he score lots of goals because the amount of chances he's wasting would have put him far further up in the top scorer list if he knew how to fucking finish. The guy can mainly scores from assists, he doesn't shoot good and he never takes free kicks. When he isn't scoring goals from good assists what is he doing? Nothing, he's invisible then. Benzema has scored less this season but works much harder in not only scoring but assisting as well, he knows how to finish better as well. 10 goals, 10 assists. Higuain has 15 goals, less than 6 assists. Oh yeah and as you said he can't score in Champions League...as if that's a small matter. He's not an effective goal scorer with the amount of provided chances for him in consideration. Suarez on the other hand is a goal scoring machine, the guy scores lots, he knows how to finish and he has some great free kicks. Higuain has none of those. The only difference between them is that Suarez is a cunt.
The Isco one is mostly a joke. Let's be honest here, none of us would mind having Isco on our squad but we already have enough players in that position so it's not a huge "miss" if we don't get him. Kaka is shit, I'd take Isco over him any day. Who knows maybe Kaka will become a top player again if Ancelotti is coming!
Di Maria is a good player but nowhere near Bale's quality, to argue against this would just be ridiculous.
Marcelo is a good left-back but as seen this season his injury caused us problem because we didn't have any good replacement for him. Coentrao is not of Marcelo's quality. He's ok and I wouldn't mind him as a reserve but there are probably better players than him in that role. Besides someone might pay the clause so we should be prepared for it and he's not happy in the club.
If you're satisfied with players like Kaka, Higuain, Di Maria and Coentrao you might as well go and watch Liga Adelante and support Real Madrid Castilla instead. You have some strange views.