I think Robben was a mistake. Van der Vaart, Hunterlaar, and Sneijder weren't really needed. I've been watching Sneijder play for them and he just doesn't fit in their system anymore. They already have enough attacking players, which forced Sneijder to play deeper. He isn't as effective there. Now he's playing as an attacking center mid for Inter and it's already looking like a great fit for him.
Madrid won't be as deep anymore but they'll be fine. Sometimes it's better for the locker room to have less players. I think some of their transfers were voluntary but some weren't (Robben). It looks like they really needed the money to pay for some of the wages.