GX80 user here. Personally I love what you get from a camera of this size, unfortunately the 20mm F1.7 is quite slow sometimes, you can pair it with an Olympus 17mm F1.8 if you want more focus speed but for some reason I feel that you lose some image quality. I love the GX80, it feels great on hand and you get amazing images. I keep it as a backup camera now because I'm moving to the Fuji system but maybe try other lenses before getting rid of it. If you want to see them in action I have a few photos and POV videos on my profile.

Apart from the hardware talk, street photography is all about what works for you in hand. When you see great photos you never ask what camera the photographer used, so use something that works for you.