Steeliest of the dragons
I think this (along with several others who have said things along similar lines) basically "makes the case" for the Witch as an independent class, with their own subclasses for the various flavors of "witch."I like the Bard option.
I'd love to see an Unearthed Arcana with witch-like subclasses for Druid, Warlock, Bard, and Wizard, each addressing another variant of the witch archetype.
Potion making. Hexes/Hexing power (buff/debuff that increases with level). "Spell Focus" options (choose familiar or item or, how 'bout "Alignment: Good, Neutral, Evil" as a focusing ideal/power? "Are you a Good witch or a bad witch?" ), maybe determined by subclass. "Craft powers" determined by subclass. + feature 1, feature 2, feature 3, whatever else.
Mixed "Witch's spell list" of nature magic, illusions, charms, abjurations, limited "big/blasty" offsense.
Witch's Craft: (the subclasses)
- Hedge/Green Witch (the druid one): extra access to charms and nature magic, limited shapeshifting, more/better potions/healing, fae or druid-oriented "Craft" powers/features.
- Dark/Black/"Wicked" Witch (the warlock one): extra access to offensive magic, more detrimental options for curses and hexing, hag or demon-oriented "Craft" powers/features.
- Moon/White Witch (the bard one): extra access to more illusions and abjuration magics, "inspirational" healing, counter-spelling and un-cursing, maybe a bit more "psychic" stuff, celestial or cleric-oriented "Craft" powers/features.
- Blood/Red Witch (the wizard one): extra access to blasty wizard spells and ceremonial/ritual magics, better item crafter/enchanter (poppets, potions, talismans, etc...), "blood magic," dragon or wizard-oriented "Craft" powers/features.