The reason for the 30 degree tilt in the F-16 was to make the seat fit into the fuselage. LM pushed the so called g tollerence benefits, which are, at best, very slight. In truth there are some drawbacks, most notably the tendency of the pilot to tilt his head forward, very straining under g. Remember that most seats are inclined about 15 degrees anyway. F-16 gains more by raising the pilots feet.
As for cockpit visibility, this is a marked step backwards from, say, F-15. And, by the way, that has mirrors too.