I am not a type of guy who rewatches the whole show. But as I was going through Reddit today, I found out that Ultraman Z Reuploads consists of 30 seconds of new content that wasn't present in the original broadcast.
The new contents were added from Episode 9 & Episode 10 of the reuploads and these are comedy shorts featuring Ultraman Z & Haruki inside the Heroes' Gate. Each comedy short will refer to the monster that appears in the episode. Check it out yourself below!