The Forza series and even as far back as project gotham, were amazing games. The physics and graphics were always top level. But most of all, for a casual gamer, they were easy to pick up and play.
Forza 7 focuses too much on the eye candy and not on the game play. I don't play games that much but every time I think, right, lets see if I can get this Forza 7 happening, I give up. The interface is hideous. Nothing flows. Nothing is intuitive. It has become way too complicated with mods etc.
Call me old fashioned but I preferred the older style of the game with good tracks, good cars and an easy to understand structure.