I'm mostly excited for the VRAM savings from apps and games which have loads of unused or super rarely used textures.
Game developers often aren't super careful with this stuff, and there could be literal gigabytes of data which isn't used at all.
Are there any people out there doing this optimisation post-release for existing games ?
I worked on a PC/PS4/Xbox One game once. I wish I remembered more details, but at some point when looking at memory usage I found a 2048x2048 (or something like that) texture for something on a character. This texture was never anywhere near occupying the full screen. It got downsized once I told one of the artists, but I wouldn't be surprised if some games are inadvertently shipping with that kind of waste.