I would be awesome if we could have another option to launch games inside GOG Galaxy 2.0.

For example, with Red Faction we could keep the original Red Faction exe and also have the option for Dash Faction community patch.

The same goes for games like Doom, Wolfenstein, Quake,... We could launch the original Dosbox provided by GOG or have the option to use any of the source ports available, without messing each other.