I'll admit that I do like the premises of various isekais - kumo desuga nanika (I'm a spider so what) and honzuki no gekokujo (ascendance of a bookworm) that yo

I'll admit that I do like the premises of various isekais - kumo desuga nanika (I'm a spider so what) and honzuki no gekokujo (ascendance of a bookworm) that you mentioned are in fact two of my favorites - but it's worth remembering that these are light novel adaptations. Personally I think there's a bit of loss of "magic" directly attributable to bringing the story out of the text-based medium, particularly in the case of honzuki no gekokujo. I thought there was something very special about how Myne was sickly and could not physically go see how Parue was harvested, and how her family's description of the process was as bewildering to her (as an other-worlder) as it would be to any of us. It's a really clever storytelling device that masterfully helps convey the protagonist's situation. Another example: the orc arc of moonlight sculptor was an absolutely epic read in text format; I don't think the cartoon format can really do it justice.