Happosai
Hold onto your panties
Yeah, for some odd reason I was thinking I saw a complete series DVD release. But, it was the movies set. Well, I keep thinking what the print number was for those DVDs (the movies) and how many sold. I mean, with HnK TV we at least got the remaster from the DVDs on 3-discs. If something was popular enough or sold well enough, we'd sometimes see those SD Blu-ray sets come out. I'd say it's unlikely there will ever be a true N.A. DVD release at this point. Especially when most of Toriyama's fanbase for anime adaptations is still expecting more from the Dragon Ball franchise. Anecdotal but, a friend and I were discussing the OG Kinnikuman and how it's crazy it never had a N.A. release. Yet, Discotek just released one of it's spin-offs from a 4-Kids dub (Ultimate Muscle). Lot of great stuff out there which, at this point (with streaming and all) will likely never see a physical release outside JP.Keep in mind, Discotek's DVD was only for the initial, five Dr. Slump movies. The 1980s TV series has never received any North American release, though the late-1990s series was previously streamed on Tubi. As for Discotek's movies, it hit retail in 2014 and has yet to see any manner of BD upgrade, which should tell anyone everything they need to know about the likelihood of a North American, home-media release of the TV show.
Crunchyroll Germany's release is an upscale from a video source, but it isn't cropped. Noise reduction is applied, however. From what I've seen and other impressions, Crunchyroll's discs are better than Spain's Selecta Visión but not as good as France's AB Video; all three BD releases are video upscales.
For reference, Crunchyroll vs. France's AB Video:
Look at the shading on the background art to the left of Goku in the German and French screenshots. German seems to be framed a bit better but the French wasn't scrubbed over and appears to have kept most of the color intact. I mean, the negatives being readily accessible for these...someone could do a simple remaster and put it back into the original framing. Anytime I hear the words "restoration" I get a knot in my stomach as that usually means someone's going to screw up the source material upon post-production processing. This isn't limited to just anime either. For reference, look at the multitude of live action films with recent 4K releases and you'll see the same destructive work happening.
Why it matters? The retro crowd really just loved the gritty, grainy and aged but great work of the originals. Sorta like LD releases which were about the last of the best much retro anime got. DVD was an era with many cropping VHS releases and only hit or miss with Blu-ray. 4K or 'new Blu-ray' releases I tend to just stay away from most of the time.