As my DSLR FF is too bulky, for the sake of portability, I recently got the GM1 with 12-32 kit lens and was quite satisfied with the IQ it produces (especially when shooting RAW).
It seems the G7 is employing the same sensor (well, no new sensor!) of other family members (GX7/GF7/GM5/GM1) but with a newer/more powerful processing engine, I believe the IQ should be even better. While the support of 4K video is for sure a future proof feature, the introduction of diffraction compensation is nice to have (or it’s just a kind of gimmick, just dunno). For instance, my 12-32 suffers from diffraction starting F9.
As far as body design is concerned, to be honest, G6 is better. The sleek design of G6 makes it to be the most beauty G series model ever made by Pan.
All in all, I think G7 is good to go (GH4 is too bulky anyway).
Started out doing photography at the age of 6 using an uncle's old 1940 kodak brownie box camera. At 15 years of age, I decided to buy my very own 1975 Praktica SLR camera. I now shoot with a Nikon D850. I do unpaid TFP and commercial paid work.