Galaxy Express 999, I don’t see anything out of the ordinary, but yeah Dragon Ball (the original) is a bit concerning

Guessing Z is more important to preserve than it’s original incarnation
(What is with the Z version being more proment than it’s original version.)
This was taken from a video saying that French got a better Blu-Ray
But yeah, Toei did not care if a show gets remastered like Carranger to Timeranger (They did not consider it being put on the DVD, due to the workflow that was inferior, and poor finalization on a D2 Cartridge Tape.)
I’ve heard the Sailor Moon VIZ DVD’s were 4x3 in a 16x9 pillarbox, but mind you DVD’s are 720x480p, so it’s just loosing infomation on the horizontal sides.