I have SHOUT! Factory's first (and, to date, only) four-disc set at home.
As for complaints about the first movie, I was impressed with it. Its tone is just about consistent with what I'd want to see in a proper Gadget revival.
Now the second one…ugh. While the visuals are incredible (I still like the idea of the MAD uniform being a cast-off bowling costume), the writing is terrible. If Gadget were just a little bit smarter, the whole thing might have come off better. Instead we have something where the jokes overshadow the story…granted, that's all right for a 25-minute episode, but not a 90-minute feature film.