Unity 1.14 is a Resource Pack that aims to continue with the graphic line of the game, so as not to create stridencies and at the same time add a subtle depth to the textures. The colors used in this package of textures are formed by more natural colors than the default ones, giving a more organic touch to the various elements of the game.
It is a texture package that offers a resolution of 16x, as the default textures of the game, so it will not be mandatory to install external tools, such as Optifine. Although as you know, installing Optifine is recommended to optimize game performance. So we leave this decision in your hands.