I wonder what their reasoning behind the downgrade is. I own a FP4 and even this model features USB 3.0 with DisplayPort support.

IIRC costs and/or size. I agree, silly change. Going from the blue to green theme is another silly change, as is renaming scheme. I like many things this company does, but some decisions I question.

I also bet a smaller, less powerful smartphone with 3.5 mm would sell like hot cakes.