Well, having only owned 5 pre-2017 Heritage guitars, my thoughts are likely only worth about 25% of what Kuz has said. Mine were built in 1996, 2001, 2005, 2006, and 2008.
None of my 5 had any significant issues whatsoever. Yes, the oldest one (1996 H535) has a somewhat slimmer neck than the others, but that was how things were done back then. And so what? With the arthritis in my left hand, neck scale length is now far more important to me than thickness. That's why I now have a 24" Ron Kirn Jaguar and my recent Doug Harrison custom build is 24.6".
John's absolutely correct: listening to dumbass internet 'experts' about Heritage quality from the old days is a waste of your time.