It's not like I wanted to undermine Dortmund at all but I feel that Dortmund also needs to step up their consistency to a level at which Bayern are in. And Dortmund do need strong players to get that consistency. With players moving out or being sold they are relying on fresh faces and experience with which I feel chances are very low to win a title. Even if they do I would say they are lucky to win the title.
With the way Bayern Munich are structured definitely I will agree with you that it will take a bit of luck to get Dortmund to win the title. Last season was their golden opportunity to at least end the yearly dominance and stop the streak Bayern Munich were on and as usual they lack the ability to withstand that pressure just on the last day of the league. If you look properly the league is usually won when you have a very strong and large squad and Dortmund last season had that squad. Although they fell short of winning last season my thought is they will regroup and comeback stronger by adding more players this season but they even ended up letting some of their key players leave, some like Guirreiro to even your biggest rival.
This period is seriously a time when other team will have to dethrone Bayern Munich because if look from last season they are having an internal problem in the team that spans beyond just players and managerial issues but rather a management problem which we saw a very chunk change of directors. This kind of situation is what I want other teams to capitalize on and Only Bayer Leverkusen is doing that at the moment and I hope they go all the way to win it