Just saw it yesterday and liked it more than I didn't. I think the actor playing Lex really dropped the ball, just never felt like a real character. His speech near the end felt really forced. Lex strikes me as a tough character to portray on the screen but others have done it better.
Nathan Fillion and the dog really stole the show, great to see the justice gang, great to see the handful of other character cameos. Superman's little speech at the end really hit great for me. I think they did a great job staying true to his character. Certainly worth a watch.

thank you for the suggestion!