I was hoping for the best of both worlds - something with a 14" 3K display, very light (don't care too much about thinness TBH), but with a good processor and 32GB of RAM.
The AMD-based T495 can be configured with up to 32GB of RAM; the Intel-based T490, up to 48GB.
FHD is plenty on a 14" screen.
There is a fix in progress for XWayland scaling: https://github.com/swaywm/wlroots/pull/2064
I'm pretty sure I'd prefer a WQHD screen to FHD, but am also pretty sure I wouldn't get any benefit of going to UHD. But at the same time, if WQHD has a significant impact on battery life, I'd probably stick with FHD.