My Late 2013 15" MBP is starting to fall apart in its old age - its battery is broken, its feet are starting to come off, it's got a ding in the display... it's just barely sufferable, but not for much longer. At this point, I don't see myself replacing it with a Mac. There's nothing compelling about these Touchbar machines.
However, I'd buy this same machine again if they updated the processor (maybe one of those six core i9s that Intel just rolled out) and bumped the RAM to at least 32GB. More local storage would be nice-to-have, but these days I just don't have much locally on my laptop - it's all on NASes/Desktops. I don't care at all about Thunderbolt and probably can go another 5 years without caring too much about USB-C given how slow peripheral redesign cycles are now. So that's it. That's the only two (or three) upgrades I'd care about. All of the rest would be superfluous to me.
Sadly, I don't see that happening. I'll probably break down and replace the battery in this machine and try my damnest to ride this machine out of the decade...