Note, I'm not a Supes fan nor do I care about the Superman family. I started watching Supergirl because a, I anticipated the femslash community to be all over it, and b, because Melissa Benoist is just so adorable. So I cannot judge the canon errors. It's a bright and fun show, though, (disregarding that the romantic angle with the friendzoned bestie and the not quite unrequited crush is a bit tedious because it's so clichéd) and I absolutely the relationship between Kara and Cat Grant. I adore Cat, period. She just gets lovelier and lovelier every episode.

This probably wasn't helpful at all, but if you can stomach the errors, I'd give it another go. I wasn't super enthused after the pilot either, but it really picks up and becomes enjoyable.