Just for fun, I took Lorelei instead of Shakti; she came with 3 stacks. I played on light, Jebus Cross, upgraded the Harpies, and thanks to the terrain, I took an external dwelling of Minotaurs without losses. The Castle isn't bad either, and if you play on a small map, you can easily take a mini Griffin Conservatory and a maximum Dwarf dwelling without major losses. Plus, Minotaurs deal decent damage.
But if you're playing a random hero and get Lorelei, then you're undoubtedly right — you can play through Harpies, why not.