i own a g3 and am quite happy to see olympus using the same sensor. i chose the micro 4/3 system as wanted better photo quality but i never saw myself lugging around a dslr. i think this is where sony, samsung etc have missed the mark. why have a small camera body when the lenses are still huge. even if they do finally release a bigger range of lenses, this issue will never be rectified.
it seems to me that the main advantage of micro 4/3 over the lager senson ilcs is lens size. even if sony etc release better lenses they will not have the same zoom range unless they are huge. this for me is a dealbreaker, and im guessing that is one of the main reasons for choosing a imirrorless over a dslr..