That should work better, given a proper physical size, I guess. Still, brighter pixels suffer from too much halation against the darkest areas? It will depend on which CRT you're trying to mimic, of course, but I miss some general blurriness to get a more cohesive, organic pic.
https://s16.postimg.org/vam4clkol/rka.jpg
I've no experience with shaders for now, I'm afraid. I have confidence in getting better at photographing CRT screens since I want the best, most authentic way. It's painfully time-consuming, but hopefully I can get tolerable results at ~1280 x 1024:
https://s4.postimg.org/6jfdf0dtp/NG_Kizuna_02f.png
Anyway, that's only one of the problems I'm facing. I want to get the printed-mag effect in the small screens I need to actually use in the templates:

Everything I've tried which doesn't involve a scanner looks like shit.
And then, there's the font issue. I can't stand filtered fonts (clear-type..., that crap) at small sizes, and I don't want my site to be viewed with them, at least on PCs. Sadly, I haven't found the time to study the subject. All I know is that you indeed need an old OS or special configurations (such as mine) to get rid of it, since your web browser isn't controlling it anymore, so there may be no point.

Everything is dumber thanks to Apple these days, isn't it?