I think we are viewing Tiatto and his contribution a little unfairly, I felt the same as many others, that he doesnt produce on the left wing, he rarely crosses and rarely creates, but he always gives 110% effort, is committed and passionate. But then I read an interview or it was a Q & A session, where CL divulged that he likes Tiatto to play the left hand side narrower and tuck in more.
So from that view point it is clear that Tiatto is following team instructions, I agree that his indiscipline can cost us at times, but personally I feel that his commitment, energy and work rate are a key element of the team play. Last season we were so poor as a team that Tiatto stood out because at the time his style of play was so refreshing compared to many of the lucklustre displays from his fellow team mates. Now this season we have a team that as a whole displays a much better work ethic, we also have a more technically gifted side this season so therefore Danny now no longer stands out, he has never been that type of player, however he does provide a key ingredient to the overall receipe and IMO we would miss him over a long run of matches were he to be unavailable.