I realize this answer differs depending on age or "coming of age" and other variables. In my opinion WDW was at it's very best from about '85-'95, as far as attractions, crowd size and fun. Horizons, original Journey into imagination, World of Motion, Mr. Toad, Kitchen Kabaret, were still open, Pleasure Island, Adventurers Club, Port Orleans and Disney-MGM opened.
I remember going in late fall and literally walking from attraction to attraction with little or no wait. Innoventions was interesting. No strip searches to get into the parks, it was a much more innocent time. If you could go back when would you visit WDW?
"leave today and enter the world of yesterday, tomorrow and fantasy." " Walt Disney "