Yes, get yourself a screen ruler like: http://www.arulerforwindows.com/download.html
I have a 1600x1200 screen. When you open Word there are just 950 pixels left in the "y" for the text. The rest is used by Word toolbar, and the desktop taskbar. That is, 250 pixels are used by the OS design and application.
If I had just 1050 in the y, that would be just 800 pixels left! For me 950 is not enough! But at least it is 20% better than 800!
With a 1600 in the y, I would have 1350. That is 70% better than a 1080 screen! Nearly double the usable-readable resolution.
Another way to look at it is like this: An A4 page is 210mm x 297mm (or roughly 8inch by 11 inch excluding print margins).
If you want to show an A4 page full screen and still have it legible, you need about 150dpi for low quality = 1650 pixels in the y, and 200dpi for good quality = 2200 pixels in the y, and 300dpi for very high quality = 3300 pixels in the y.
And dont forget those 250 pixels needed for the OS and application! Therefore, IMO, you really need that 2400 y TFT screen.
And I'm ready to pay for it. The low eyestrain, the time saved zooming and panning, and improved productivity will pay for itself within a few months.