What does the launcher do with regard to the operation of the game that cannot be done within the actual game itself? Is it due to a technical limitation or simply there for the convenience of the players? Are there alternatives to such methods of starting the execution of games?
Allow you to set graphics preferences before launching a game, so you don’t end up with a tiny 480p sized window on a 4K screen during an unskippable (and unrepeatable) first-launch cutscene; or the reverse, you only see the 1920x1080 (or smaller) cutout of the center of a 3840x2160 image.
I hate when games launch directly into a cutscene. Let me change my graphics, turn on subtitles, change the audio, etc.