Yeah, the level will be indeed higher, especially at the olympics, but the goal for Germany has to be to stop the bad trend of the last olympics and world championships.
From the medal winners here Przybylko, Hofmann, Röhler, Schwanitz, Hussong, Schäfer probably would win a medal at world championships/olympics too with their performances from this week. Mihambo, Gierisch, Jungfleisch, Roleder/Dutkiewicz, Krause and the womens 4 x 100 m relay will need some luck. Currently i dont see Lückenkemper (in the 100, in the 200 she might have a chance), the female discus throwers, Abele, Heinle or Storl winning a medal at world level and the same is true for the female pole vaulters (Ryzih, Spiegelburg and Otchere (despite her huge potential)) and Holzdeppe. Linke (5th at the 2016 olympics and the 2017 world championships), Heß, Kaul and Klosterhalfen have the potential to break through and win a medal. C. Harting and Kazmirek/Schrader will hopefully be back.
I think 8 medals would be good, 10 medals would be great.