I would happily choose both of the Sony 35 lenses. Sure the 2.8 is much smaller, more stealthy and cheaper. But the 1.4 must simply be a bummer.
I myself owned a 1.4 Distagon ZF.2 on my Nikon D800E and it delivered. Now this new Sony Distagon is especially designed for the FE mount and thus I have no doubt about overall quality and stellar IQ.
I am currently not in the FE system, but seriously considering to enter with the AZrII, and then the 1.4/35 will be a no brainer for me. Maybe even in combination with the 2.8/35, just to have some kind of "body cap" lens.