@nealh i know how u feel. I have a 2014 MBP which had the screen discoloration but didn't know about the repair program. I got a different problem (vertical white lines on screen at random places) so I took it in. Diagnosed as needing screen replacement at about $650 cost. Dismayed! Then the tech looked at my screen closely and said he saw the discoloration issue as well - tbh it was very minor in the edge and I hated even noticed it. But that was enough for the tech to order a new part. At no cost! So the entire screen was changed costing me ZERO $. Amazing customer service, if u ask me.
Now re: the keyboard - I have tried all 3 macbook keyboards and I can say this - the 2014 has the best key travel. 2016-2019 butterfly is just no travel at all - I hated it. 2019 16" MBP is closer to the 2014 keyboard; when I tried it at the Apple Store, it was very very good, I could see me being very happy with it. I was not going to buy the 16" MBP if it had a compromised typing experience. I am a developer and I am typing so much.