I recently purchased a 24" 16:9 Wide-Screen LED/LCD Monitor, prior to that, for the last decade or more, I have been staring at 4:3 laptop screens.
One thing that I have noticed, is that whereas before, with the laptop screen, I could see all of it, without exercising serious peripheral vision.
However with the new whopper of a monitor, it's a case of "pan and scan" left-to-right, as even peripheral vision does not cut it.
Another consequence, is that supposing word wrap is on, then in a text window, all the "action" is now on the far left of the screen.
This issue is not unique to HE of course, I suffer the same with many apps. The general solution for me is to move the entire screen to the right, sufficiently, so that the far left of the screen is much closer to me, so that I do not have to look left or turn left.
In hindsight I should have got a 4:3 24" monitor, mea culpa.

In any case, as HE is my favourite editor for composing text, (I don't use it for programming) I thought that a useful feature would be a "VIEW" toggle-able option to centre the text on a window.
For instance suppose that you have defined wrap margins at 72 for a text window. Then column 36 would be in the centre of the screen and the column ruler shifted across according.
Thank you.