"Witch" is gender neutral.
Spellcaster is better because it covers different types of magic users. Quite a few of us expressed the need to not be confined to only Witches.
Now, if we are able to create those different types has yet to be seen. I'm still not sure if I will be able to create a Native American Shaman. The magic may be too commercialized. Depending on exactly how magic ability is increased, it may be too odd to follow a storyline if we have to go into the Realm very often.