Believe me: Stuttgarts choice of international players with just two Germans is an extremely dangerous group even for Schwerin, if it works out well (new head coach) and no of the three major outside hitters get injured opposed to the last two seasons, they have a fair chance to dethrone Schwerin and become for the first time German champions (it would be not the first German championship for Stuttgart, because at begin of 90's CJD Feuerbach was three times in a row German champion, being a part of the City of Stuttgart).
I took a closer look at their roster and you're right, they can be quite dangerous with Daalderop/Sandor/Mlejnkova. Is van Daelen good enough, though?