You know, I almost certain Shimerman was only talking in jest, but at the same time I can totally imagine such a show. I have never been a great fan of the Ferengi as a culture specifically, but a series focussing on Quark and Rom as kids I would totally watch!
Also, I'm curious how this cartoon would have looked. Considering the decade and the source material, an animation style similar to what they did on shows like Batman: The Animated Series
or Silver Surfer
would have been possible. I would love to see production art for this!