I actually like the new keyboard more, so I don't really get the nostalgia. I use a x220 and I got a x230 for my girlfriend, so comparisons are made daily.
I remember how attached I was to my ThinkPad keyboard and how worried I was when they changed to the new one. Comparing the new with the old the new seems to be much more responsive and rock solid -- the old flexed a bit and is not that crispy. I guess that is just memory trick that makes us think that the old was better -- especially when we were so attached to the old keyboard -- this was and still is the most important selling point for me and many other people.
I did not have high hopes for the screen -- probably nobody produces 4:3 laptop displays and they will certainly not adapt entire process and start production just for one, niche laptop.
And I say that as a previous 4:3 adherent.
It really is a tradeoff and I'm not convinced either is objectively better. It all depends on your use cases.
4:3 screens aren't really made anymore at least not in the quality people expect. You still can find 5:4 screens and 1:1 screens which are made for medical usecases but those are expensive as frack.