We are actually planning on moving to graphs now, which we are seeing better results with over trees, check it out if you also want to use them in kiln - but you might want to wait until we validate a little more and lift it out of experimental.
I think the key difference between the two since kiln adopted the same approach is the ability to generate reasoning / chain of thought and export to alpaca, chatml, etc - along with direct to unsloth.ai's formatting. I doubt we will have UI as its for running on backend systems and part of an ML pipeline along with being a library / SDK.