...No one should have an issue with it as is anyway because no one is going to be playing the game at a resolution fully capable of displaying a 4096x4096 image for it to be that apparent.. And if they were, at that point it's more than good enough that the backgrounds have just been remade at all in a higher resolution than a portion of a 512 pixel height image in a 240 pixel view port.
You're wrong because:
1) 4k display are cheap and common these days
2) the fields aren't displayed in 1:1 of theirs original size, the zoom level of the camera show most of the time only a part of the screen, so for exemple if the camera show you 50% of the screen and you play in 1920*1080 the field must been in 4k to be displayed 1:1
As for the render, as i underdound, Jusete use paid server to do the rendering, so it may cost more to render at bigger resolution and emulate some antialiasing.
The render is in most part realy great, i put this option to remove the small default (by layering to keep only the aliased parts of the esrgan one), because the best the picture, the more you'll notice defaults.
