A year ago, I would have leaned to agreeing with you mostly.
But he loses out for two reasons. Yes, he united Spain and has been a real leader with charisma on one hand.
On the other hand, the incident not too long ago when he went to Russia to do what would have been more than illegal on his home turf: shoot and kill a tame bear who was fed drunk, was an act that was absolutely off base. Especially for someone who is supposed to provide an example to his fellow Spaniards, and fellow men and women too. Thumbs down, way way down, for this low low behavior of this king.
If it hadn't been for this incident, he'd hav e been high on my list, despite point nr two, see below.
The other thumbs down is the way he's always treated his spouse. Running around with mistresses is the rumor that's dogged this man for eons. Of course, this is a rumor, hwoever where there's smoke, there's probably fire, more likely so than not in this particular case. With a wife like Sophia, I am very disappointed in JC's conduct as a husband, I have to say. He has been so lucky to have her by his side, she's never ever ever put a foot wrong. But he has.