I agree with you. The Bundesliga was very competitive last season. Union Berlin has been at the top of the table for a long time. The title would have been possible for Dortmund if they had won the last match of the season. We haven't seen that in previous seasons. Every season we have seen only Bayern Munich dominate. No team competed for the title.
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Bayern Munich has definitely dominated the Bundesliga leaving fans who want for champions from a variety of sports feeling uninspired. It has been difficult for Borussia Dortmund to meet Bayern high standards and their upcoming season appears to be difficult. Bayern Munich well managed attitude and emphasis on achieving goals last season were a good sign which contributed to the competitiveness of the season. Union Berlin stands up as a possible rival with their present squad but other teams may struggle owing to financial limitations. To break up the monotony of Bayern domination, the league needs more teams to rise up and present interesting challenges.