>>283239718
Each adaptation and studio is a different world, manga adaptations contributes a lot to the adaptation because it creates a previous work for anime pacing and adds weight to a series before the studio can butcher the material with its power.
It'll depend on the studio (some of them have skilled screen directors and mangakas) others no, ToAru for example is a good example why a mangaka can be important to make a simple series adaptable, Railgun seasons are far better as anime than Index.
Series like Mushoku, Honzuki, Mahouka, and Kusuriya aren't easily adaptable without reworking the dialogs and pacing, those LN that aren't simple scripts but a mix of monologues, explanations and dialogs with extension that is barely correlated with the "screen time".
Shinsekai, Juuni Kouki and Tatami Galaxi were direct adaptations and a clusterfuck when it comes to pacing and dialogs. Meanwhile Monogatari was tolerable but it required a lot of work by SHAFT, that has excellent production and isn't the norm among studios.
>there're studios that can do direct adaptations (SHAFT)
>there're good anime with problematic adaptations (Tatami, Shinsekai, Juuni Kouki are both good and bad as adaptation)
>there're bad anime due to bad adaptation of the LN (Juuni Kouki, Youjo Senki - but the 3 versions are different tho)
And having a reference material fully adapted is important too, for the plot and the visuals, Jormungand adaptation was good because the studio had complete* manga as a reference instead of the early manga that was terrible.
Having the correct mangaka is also important too, specially if a studio is gonna use the manga as a reference too, Tearmoon is a terrible adaptation of the novel, ToAru Index is bad too (regardless Kazuma retardation).
Video Game adaptations and original series are a good example that having less material/more freedom in the adaptation is usually bad.
