well, at least the manga said after the dungeon exploring segment, people will be assigned based on the result (which i guess this is only unnecessary padding before mc finally end-up in s class)
there's also dumb part (which kinda make sense in the WN but not in the manga) where one of the s class challenged mc for duel since he jealous with mc's harem, only for the reincarnated girl replace mc position to duel (not before she said mc is her sword teacher) and beat the s class in one hit, thus denying the mc chance to prove his strength, at least in the wn the duel between girl and those doofus still happened but only to decide the class strength hierarchy, which make the girl is the 2nd strongest with mc as the strongest
and in the latest manga raw, it looks like people already realize how ridiculously strong he is, like the student from s class need a full party to challenge the dungeon, while mc only need 2 people (mc and cyrus), even karen dumbfounded when she found out mc is actually a strong swordman and the teacher keep praising him (the elf mom + cyrus)
well, at least there's your typical random incident in the dungeon which i guess give mc the spotlight
and the manga karen is not as pathetic as the wn version... for now
at least the good part of this development is
it will give a good incentive for mc after cyrus got killed since mc mingling more with him in the manga compared to the wn