I think that Suarez deserves another chance, now that he has apologised. This is a man with a suspect temperament, who was banned for biting an opponent in Holland and who seems to think he can do what he wants on and off the pitch.
However, when you look at Kenny Dalglish's signings since he became manager of Liverpool, then Suarez is the best by a country mile when compared with Downing, Henderson or even Adam.
Eric Cantona didn't "get it" when he first arrived in England yet most people would look back at his time here and consider that his talent and skill added something to our domestic game.
Suarez is effectively on probation. Another strike and you're out, Luis.
Having said that, Suarez may decide he doesn't want to respect a great old club like Liverpool and he leaves of his own volition. That's his shout.