Let's look at Dortmunds squad and assess players strengths and weakneses

Kobel
>One of the strongest keepers in europe, has saved Dortmund from fully collapsing for years now, but he's average with the ball and has had a fair share of big mistakes, this weakness makes Dortmund an easy target to press up high. On the line nigh invincible
>Anton
Pretty much an allrounder, good foot, good defender, good header at corners. Not very fast but also not slow. Strong personality
Bensebaini
>catastrophic first season, but you could see he was determined to become better and has done so. Very important player for the entire last season, initially at his usual LB position but now as the left center back in a three man defense he's really shining. Aggressive, fast, decent with the ball, but also error prone. Cost dortmund the chance of a remontada when they were raping Barca by scoring an unneccesary own goal
Ryerson
>Absolute beast mentality, super aggressive in defense, runs endlessly, and is actually not unskilled on the ball. He can beat players in a 1o1 through explosivity and physicality, has a decent shot and cross but is technically inconsistent. Not very agile though and can struggle with explosive wingers
Süle
>A walking meme, with peak moments both in defense and offense, he's fat yet fast as hell when he accelerates, good with the ball, amazing tackling but prone to errors
Svensson
>Ryersons swedish little brother, still boyish but runs endlessly, defends hard and can be elegant with the ball. More intelligent version of ryerson. Came in winter and very quickly became our starting left back.
Couto
>Mental midget that has not adapted at all to Dortmund, lacks personality, is easily frustrated. Probably good technically and very fast but he constantly makes mistakes. Cost us a shit ton of money so there's an attempt to salvage this transfer but against Ryerson he's pretty much set to be a complete flop