never played 4e myself so i've never really managed to grasp what differentiates the druid from the warden, but when i say split the shapeshifting from the druid i mean split it properly, flavour and all, make the resulting class closer to the sorcerer's concept (not as a caster, i don't mean like that), a versatile base that can go in lots of different thematic directions based on the subclass you pick, one guy is turning into the beasts of the wild, another is draconic-focused, that lady is turning into various undead and her friend is going through a spectrum of elementals but it's all from the same class.
i don't disagree, i do think the the wizard could be chopped up between bard and sorcerer, and i see the logic behind merging the cleric and the warlock though i wouldn't want to sacrifice pact magic to make that happen.
i wouldn't mind reading that too (although admittedly i probably already have at some point.)