Borussia Dortmund came really close this season in the race for the title, they pushed Bayern Munich until the end and didn't bow down easily. They might not be champions but I commend their efforts, performance and good mentality. If they can do the same next season, with a little luck they might get a chance to win the league.
At the very least, the bundesliga was more entertaining and tense than in past events. Before the league ended, the Bavarians were crowned champions a long time ago, but this season is different; the final game determined the winner, and it was one of the most tense football campaigns I've seen in a long time. Borrusia Dortmund pulled a large competitive race for the bundesliga crown this season, Bayern Munich never relents as they push harder in dealing with their opponents, and Dortmund is no exception. I expects more important fights for the title next season.