Real Madrid has the quality of players in which Xabi Alonso can use to achieve success because he was able to use players that ain't big names to win the title in his former club. Madrid is a club filled with all stars, and with the right game strategy from Alonso, he will improve the club's performance and achieve success.
You have made strong point. Xabi Alonso would be great fit for Real Madrid because he has already shown he can win with different kinds of teams even those without famous players. Since Madrid is full of stars Alonso smart game plans combined with his deep knowledge from his playing days would help team to play better and win more and become even more consistent which is exciting for any fan.