Did you know you can now bamboozle the CivitAI Generator into generating at any resolution you want? Yes, you can now create Cinerama landscapes, make your still lives 200% more tasteful and actually use Illustrious 1.0 at its heavily advertised "native" resolution (I hear proper support for the latter is coming Soon™, but I wouldn't hold my breath). These images come straight from the Generator, no upscale or metadata hacking involved.
The trick is simply to do an upload img2img at 1.0 Denoise from an image of the resolution you want. I used 512x2048 and 1248x1824. Theoretically the content should not matter, but it does, so I picked a medium gray - a zip with a few relevant templates is attached to this post. Then you generate as usual. You just can't pick a resolution like you normally would and you can't use draft mode. Note that remixing the examples will ignore img2img settings, and img2img results will be marked as txt2img. Those are site bugs due to the feature still being somewhat underbaked. Also, like all things img2img, this won't work with Flux.
Now, there is a downside to this, and that is that it'll cost you. img2img already costs a premium, high denoise adds even more for some reason, and higher than normal pixel count will add a big multiplier. The lamp cost me 7 Buzz when it would have been 5 at 832x1216, the Illustrious HD one cost a whopping 10 instead of 3 (and both of them are at fairly low steps because this is just a demonstration). So it's not for the thrifty, but sometimes it might be worth it. For what it's worth, it's still cheaper than gen + hi-res fix.
I also can't say what it does to the quality, and that probably depends on the model. Illustrious 1.0 doesn't look that great but that's my experience with Illustrious 1.0 at any resolution, so who knows. If you really want to go for it, you'll need to try it for yourself.
But it IS possible. Just scroll down this cat:
Don't tell me it isn't worth it.