Screen width - responsive - large screens

On the responsive templates we see a lot of unused space on larger desktop screens. As the bulk of our users - especially super users - use large monitors they have been rather vocal about this one.

Can we increase the max-width? Currently it's 1140px. That means on larger screens (like mine :)) you see a small section of forum and the rest is grey.

At the moment it's a lot of scrolling which larger screens are normally supposed to avoid. A max-width closer to 1500px would be a much better use of the space without making the sentences too long to read easily.

As per @Jurgen's comment below, adjustable would be best :)