This is a great family drama with elements of superpowers thrown in. Tyler Hoechlin is great as Clark Kent & Superman. Jordan and Jonathan's characters tend to grow on you over time. John Henry gradually becomes an integral part of the story. If there's some weak point in this series, I'd say it's Lois Lane. Her character should have been written better. Throughout the series, she's just an overbearing mom and a condescending person who feels she knows better than everyone else and gets upset when people don't do as she says. Her character becomes unlikable pretty fast, and by the middle of the second season she's borderline unbearable.
Another issue is that the females are grossly miscast. Emmanuelle Chiqrui is probably a good actress but she looks 20 years older than Clark. And, as everyone pointed out, Lois looks 10 years older than Clark. Even Lois' sister, Lucy, is clearly a middle-aged woman. I've got nothing against older female actresses but they should be cast in the right context, in the right characters. This show simply cast older women to masquerade as younger women and it detracts from the visuals from time to time.