a larger hardware fix for the x200/x201 is the x2100 upgrade (intel comet lake motherboard, nvme, up to 64gb ddr4, 13" 3000x2000 ips panel).
see https://www.xyte.ch/mods/x210-x2100/ for an overview, although sadly the availability is diminishing (and the hardware is far from bleeding edge four years later) -- the above linked vendor is awol.
i've got myself 2.5 x2100s, hoping that will tide me over until something new becomes available.