Configure games via Home UI (advanced users, cf. autoexec.cfg)
Games have a multitude of options and settings that one may wish to configure on a per-profile basis instead of using per-game cvars or custom profiles.
To facilitate game configuration for advanced users, Home should offer a way to enter autoexec.cfg-like free-form commands that can then be used to change cvar values, issue commands, or define aliases. This fully replaces the need to use command line options to customize the game.
In practice, each profile in Home can have a popup edit box whose contents are saved in the profile. There could also be a similar game-wide edit box opened via the game family's action menu.