You could also try to increase the negative space between the "S" and the contained "A" and "F" - (essentially making the "A" and "F" smaller) to allow the internal space in the "S" to read better. In the second example, i've shortened the tails on the "S" also.
You could also try to increase the negative space between the "S" and the contained "A" and "F" - (essentially making the "A" and "F" smaller) to allow the internal space in the "S" to read better. In the second example, i've shortened the tails on the "S" also.