Plus, Sony-Zeiss will likely never introduce native FE speciality lenses (tilt-shift, macro, super tele, etc.) because the potential market is VERY small (limited to Mancuso and a few others). The Canon TS-E lenses plus a Metabones IV adapter add some versatility (and fun) to the a7/a7R lineup.
I'm thinking WATE, 24mm TS-E, FE 24-70mm, FE 55mm, and FE 70-200mm as my basic kit. Not too heavy and only one adapted lens.
While my FE 35mm was one of the "good ones" (no decentering or color shift and sharp to the edges), I sold it after returning from the Palouse because I didn't pull it out of the bag once during the trip. A true test of any lens is whether you use it or not.
Joe