This version of the model should retain the background enhancing ability of previous models without effecting the overall style of generations too much. It still doesnt need any trigger words and seems to work best with a strength around 0.4-0.6, but you can go as high as 1.0 and as low as 0.2 if needs be. Some issues I have noticed is less consistent crowd generation, some difficulties with animals in outdoors settings, and increased detail in 3d generations, which may mess with some styles. The model's ability to improve backgrounds of images with humans in them and images with just background may have improved slightly, however.