Old fashion a nice slack 74° headtube and high standover paired with small bars and fast skinny tyres none of this 9"or 10" rise bars and top load stems what seems common nowadays!
I think I'm being a bit too picky really
I would consider anything at the right price really
What exactly do you want the frame to have?
I'm a stickler for geometry on my bmx so appreciate the need to be specific.
(Guessing it's the long chainstays and tyre clearance)