I have faith in 8bit's capabilities, though I haven't seen the source material for this, the first episode already proved to be more remarkable than its other counterpart from the same genre (smartphone boy, death march, smartphone boy v2.0) even though the basic premise remains almost identical with the exception that this one got a slime as a protagonist. I guess it speaks to the capability of the studio to deliver.
Another reason why I am confident with 8bit is because of their show last season, Yama no Susume, that demonstrated their excellent animation and great attention to details, the fact that they animate movements that one could write off as trivial is what makes those movements more satisfying to watch.
RE: Tensei Shitara Slime Datta Ken Adaptation Style