I love the OT films, but I maintain the strong opinion that popcorn flicks is all they ever were, and their deep appeal is a combination of historical context, lucky accidents and nostalgia.
I'm of the opinion that the PT lacks these significant crutches and suffers from considerably worse scripting and dialogue as well as a general lack of texture, pacing and coherence that specific set pieces and occasionally beautiful design are insufficient to rescue it from.
And it lacks truly innovative effects relative to the incredible leaps made with the first three. I mean, for the most part, those late 70's/early 80's effects still hold up to this day. PT effects already seem dated.