My experiences with sidux tend to mirror yours. It is one of the best thought out distros I know of. I guess this is why I keep coming back to figuring out how we could use it, or portions of it, for a Mint variation.
A sidux Lite install containing Mint quality artwork that presented a nice clean GUI for program and Mint tool complement install, after the initial install, would make for and interesting set-up. Let's face it, the .deb program complement available for Debian is unequaled, even by Ubuntu.
Using sid is always going to present some challenges that are difficult to overcome if one of the criteria is to always have to have GUI's that run in X instead of scripts that don't need X, but if we could get past that... Think of the advantages.
Oh well, just dreaming.
Insanity: Doing the same thing over and over and each time expecting a different result.
Democracy is 2 wolves and a lamb voting on the menu. Liberty is an armed lamb protesting the electoral outcome. A Republic negates the need for an armed protest.