I remember ALL of that. (showing my age!) I remember what I believe is one of the first shows..which was Joe's brother coming home in uniform from the war(Vietnam) walking up the front porch of the Martin home into the arms of his mother Kate.
Remember the blue checked curtains in Kate's kitchen? I used to love that kitchen.

That was where a good many scenes took place, the family around the table, or in the living room of the Martin homestead. That and Phebee's mansion...when she was married to Charles, while he and Mona(Erica's mother) had an affair and fell in love.
I remember distinctly the day Brooke arrived on the back of a motor cycle. Leather jacket..she looked like she was out of Grease! Sort of similiar look when Haley arrived..she was a bit more goth..than greaser, but I remember thinking at the time "this has been done before".