Having the protagonist traumatized by the raw stress of what would realistically happen in an isekai scenario ist brilliant. Its not the most innovative idea but it is pulled of very carefully. The care that is put into that though clashes with the rarely funny jokes about isekai clishés. But I didn't notice many of these points in the first episodes because a smooth pacing and good mystery/character writing kept me from noticing. But when the writing slips at roughly the halve way point of the season you start to see these things. At this point Subaru and later other characters start a habit of being understandably shaken, traumatized or even broken by the events that this world throws at them but then being ashamed of feeling that way. In my opinion this males everything more realistic but there comes a point where it really starts getting on my nerves and I find myself skipping huge dialogue chunks because I can't bear listening to them glaring each other the same way for the 3rd time.
All told tho, I still highly value the genuine streak of faithful writing that permeates the whole thing.