The GH5 has been my workhorse for almost a decade now. For whatever reason, the need to move on from it has never been necessary, so I've stuck with it. For instance, AF is not an issue. Manual focus is how lenses get used by me. Slow-mo is a thing to do less of, not more of, imo.
A full 10 years on, what does a different camera offer; like really offer? An extra stop of exposure? An extra bit of DR?
Looking at a GH7 the thought is, "MMM, pretty nice." But then what? A big difference in ... what ... gets captured? Maybe the market has matured TOO much for me?