There is no general way to change a game’s FOV, that’s something that is handled on a game to game basis by the game devs, so no way to cover it in a general profile.
You always can deal with FOV the old fashioned way though by using the ‘Image Zoom’ setting combined with ‘G3D FOV Enhancement’ (the latter only if possible without visual glitches). That’s also how it’s done for official profiles if no other option to adjust the FOV exists.
Not 100% perfect since depending on the amount of zoom required this method results in more or less annoying black bars. But it works for virtually any game.