As I mentioned, the part I hated the most was the abandonment of the idea that you'd do anything for family, and it was especially egregious that Five slept with Lila, thus hurting his brother Diego (not to mention Five and Lila were just...ewwww, no. Loved them as frenemies, hated them as lovers). But I also hated how a lot of the plot had a "weird for weirdness' sake" feel. I thought there was very little cohesiveness to the stories all season long.
Before I watched it, I thought it was a shame that season 4 was only 6 episodes instead of 10 like the others. After I watched it, I thought only 6 episodes was a small mercy. And yep, I *did* notice the actors struggling to say nice things about season 4 that didn't involve complimenting one another <g>.