... He comments on the shade of the blue contact lens. His eyes aren't CGI.

The fact that Orlando Bloom has changed in twelve or so years is inescapable and so best ignored - there's nothing anyone could have done about that and in all honestly, he hasn't changed very much. I agree with you about the character of Legolas. My feeling is that people are complaining that he is different without appreciating that he's different because the scriptwriters mean him to be, and for a reason. This is Legolas as he was in a period for which Tolkien left no blueprint. The king's son on his home ground, neither liking nor trusting dwaves. The addition of Tauriel has allowed them to show glimpses of the gentler Legolas we got to know in the LotR films just as the Council of Elrond allowed them to show glimpses of his haughtier, angrier persona. I'm working on the assumption that the experiences he undergoes in BotFA will change him, allowing the two sides of his nature to merge. We're just not there yet.