Those things are all possible, but really the only entity that has the power to realistically do them is the OEM - Valve could do it for SteamOS, but only on it's own hardware.
Given that a certain amount of windows gamers have been having issues making sure their PCs complied with the config requirements for the latest COD/Battlefield, it would seem an even higher bar for a consumer targeted bit of software that needs to do more to be running securely (or add a different mode to your distro install and reboot to it), alongside the wider variety of distros/configs. Distros advertising themselves for gaming or getting people to migrate from windows are also trying to keep barriers to entry low or to appear simple.