Again, no it wouldn't, because Nerubians have a set thematic and units like Crypt Lords have specific ability sets. Despite @
Triceron's insistence, you can't just swap out animations for abilities and pretend that there will be no balance issues involved. Changing an ability from Parabola into an instant straight beam for example can cause balance issues. The other problem is that the Druid class' abilities don't fit the Crypt Lord or the Nerubian thematic, so unless you're going to reskin and rename the entire Druid ability and talent set, you're fooling yourself if you think it makes more sense than simply making a new class.