I get that there are two options for it but both are very narrowly implemented. One forces you to go SWF, the other forces a racial choice. The way this enhancement in Harper works is very flexible, and useful to a wide variety of int based builds, I am only asking for the same options for cha based or cha heavy builds. I also think it makes sense for the tree. Its meant to be generic, available to EVERY CLASS, why not make it possibly more useful to a larger variety of builds? What's inherently wrong with that?
The lower level x stat to dmg enhancements are set to specific weapons. This enhancement is incredibly open to any weapon, no feat requirement, no class requirement, no racial requirement, etc.