I've finally finished season two and it is such an improvement on season one*. I feel they found a much better balance between the superhero stuff and family drama.
I found Ally Allston an uncomfortable character, and not in a good way, as (I believe) it is based on Alison Mack, which is pretty tasteless. Even if it wasn't intentional, there are too many parallels to ignore and this should have been picked up and tweaked.
All the Bizarro stuff was ridiculous, fun nonsense, though.
Kudos for not killing off John Henry, Sam Lane or Tal-Rho. I almost can't believe two (non-lead) parental figures and a evil-brother-turned-good survived in a CW/DC show.
*I found season one relentlessly miserable and felt it made Superman look like a loser and a failure. Not really what I'm looking for in a Superman show.