Bandai's giving away the classics, but it's a slow drip. Recently completed is the entire original run of one part of Voltron: Dairugger XV.
If you're familiar with the Vehicle force, then you're going to see some differences. The captain and executive officers are reversed, the team has a more typical presentation for the genre and period, and it's a different--but familiar--premise; you'll see that the 80s adaptation was very much an exercise in Flanderizing the source material and seriously dumbing it down.
So come see it with new eyes. Too bad Beast King Go-Lion isn't so available, but maybe in the future that will happen.