Lots of complaints about the Z system and the weighty and large lensesI bought the Z7 when it came out as a package with the 4/24-70. The Z7 with zoom was about the same size as the EM1 with its 2.8/12-40. Not sure about the weight anymore but from memory it was similar. What often gets forgotten: There are really good, relatively small and reasonably priced 1.8 lenses. The equivalent in an APSC system would be f/1.2. If have no plans buy any of the Nikon f/1.2 lenses. Too large for me. I still got three 1.4 lenses from the F legacy: 24/58/105. Yes - not the most modern lenses anymore, but I don't think I will ever sell them.
The 50 and 85 1.8 are pretty good, not sure they get forgotten about, I had both of those as well. the 58 1.4 f I’d love to try sometime, we still still have a D800 we use from time to time. I really liked the 24 1.4 F-mount too but after reviewing some of the Astro pics I took with it, it exhibits a ton of coma with stars wide open, which is my only complaint with it.