I own bunch of Glocks. Had a G26 grafted to side until the p365 was a thing. Of all the guns I have owned Glocks have been the most trouble free. I am a Glock armorer, but on my own guns all I have ever done is change the sights. Step one addressing a reliability issue with someone's tricked out Glock has aways been, "go get the box with the original parts."
Glock has had many opportunities to move their design forward and they really have not. The Gen 5 was the opportunity for a true redesign and the time to maybe even go with a FCU type system. Instead they played it safe and only addressed internal issues, and played with cosmetics. So we got a gun that looks like its interchangeable with its predecessors, but mostly is not.
I am not ready for, nor do I need, a "not Glock," but I can see this appealing to someone entering the market now. It seems that Innovation in the Glock space will be by others. Not unlike the way the 1911 moved beyond Colt.