For some reason Robots in Disguise (the one from 2001) has gone down as one of the more obscure lines in the history of Transformers. It's weird as for the most part as it was reasonably popular. Sure some of the toys were overly complicated, but boy did those molds get a lot of use for a few years there. The cartoon was silly, but generally well liked. In fact, I don't know why silly is a bad thing. Something can be light hearted and still feature mature story telling. I wouldn't call the cartoon mature story telling, but it certainly was a fun show to watch.
In fact most people were really looking forward to it coming out. I can understand people who weren't around at the time not being very aware of it, but a lot of us are still around. I had a ton of fun hunting down all of the toys. After it was over and Transformers had moved onto Armada, RID was the comparison those who didn't like Armada made often. They liked RID so much and found the toys to be so much better and now... poof. It's just gone from popular memory.
The show cannot be released on video due to a ridiculous amount of legalities and probably a lack of interest in some of the folks involved. I hope that one day it does get an official release, it 'd be nice to have a legit copy of the show. It was a good TF series that got treated unfairly by history. It'd be nice to see it get some love again.