The attack power on Dortmund's front line is very weak
Borussia Dortmund is a very good team. This is a team that have transfer structure, they don't just spend on player that don't worth. Though right now the club is going through a rehebilation process . They brought in Sébastien Haller, who scored couples of goals for the team .
I agree with you, that Borussia Dortmund is a big club and contributes the most players to the German national team, so it is not surprising that Borussia Dortmund will always have expensive players for the long term such as the unknown player who has just been brought in Sébastien Haller, the starch will be being a player like Erling Haaland whose name was adopted by Borussia Dortmund, of course it is very interesting with this player, whether Sébastien Haller will be like the next Erling Haaland..