Reviewed the DIF of ESB 2004 vs 2019 and below are the significant items for consideration.

Zoomed in reframing of the entire movie; Crawl to Credits. Results in a loss of picture of about 4.82%.
Zoomed in reframing cuts off pertinent characters like when Leia says “I don’t think this is wise”.
Reframing leaves the credit uncentered.
The shot of Han about to be carbonited, which got a shirt recoloring in 2004, has now been zoomed out.
A shadow was removed from the Bespin landing platform when Luke and Vader confront each other.
Stabilization efforts affect the beginning and end of shots.