I've been watching season 2 with low expectations, and mostly was satisfied. There are several problems with season 2 though.
1) Ritchson is so big he can hardly move, which hurts the fight realism. He waddles instead of walking. The appearance is ridiculous
2) The fight scenes were mostly extremely bad. Except for Reacher the team members are very scrawny and couldn't intimidate a Jr high school bully. The plot armor was really over the top.
3) The lack of realism was oppressive. You couldn't watch without yelling at the screen that nobody could leave killing fields behind them everywhere and not have any trouble. This was simply bad writing.
4) There are only two good actors : Patrick and Kingsley. The latter had a small presence but he created a chilling impression of cold menace. Robert Patrick was excellent, portraying the psychopathic bitter ex cop to perfection.
Between the very poor writing and the almost nonexistent acting skills of Ritchson I have little hope for improvement in season 3.