from small and exquisite make big and clunky ...

The battery holder is of course absolutely accurately and thoughtfully. Who really needs a Accurate for portrait photography or perennial battery power or better camera attitude for which the part is built and perfectly.
Otherwise, you naturally forgive the charm of FT or Micro Four Thirds Photography by building a full-frame body of a rather delicate case.
The original Olympus price for a rather windy plastic part is unjustifiable remotely - unless the monopoly forced.
With 4 stars benevolent excellent - due to the miserable price / performance ratio

RB