The characters are stock and static, the dynamics between them are stock and static, the plot so far as it has a plot as opposed to just a setting has been done a dozen times before and even on its own terms it wears its gags threadbare (oh look, the cast have been eaten by giant amphibians again...), it's a fun but entirely middling show.
To be fair to it, it's difficult to be too critical of KonoSuba as really it's pretty mindless, you can safely say that as a viewer it'll be difficult for you to feel too disappointed in this show as your investment in it is going to be so minimal.
What it does well: being light forgettable fun.
What it does poorly: basically everything else.
I'd give it a 5.5 but I can't so it gets rounded up to a 6, enjoy it, but you'll have forgotten it by the start of the Summer 2017 season.
