Stuff about Mellborg and Knezevic are justified, because Moggi signed better free agents than that. Perhaps Melo is a bit overpriced, but you can't go into a restaurant trying to debate the market price for surf and turf. The market price for Melo was 25M Euros, set and standard, so arguing about this will get you thrown out of my restaurant.
About having players that can control the pace, Diego has shown that he can, and I believe Melo can as well (compared to other players we have had in the team over the past 5 years). Moggi had us play with two extremely mechanic central midfielders who got the job done without any flair, but they did shit for us in the Champions League. I don't appreciate those seasons with Capello whatsoever because we could have achieved a lot more if the bastards made smarter decisions.