Let me start of by saying, I totally agree with the mediocre image quality. While Seasons 1 and 2 seem to look the worst, 3-7 don't look particularly "great" either.
The packaging, while sort of cool at first, just seems clunky over time. The interior digi-pack doesn't slide out of the exterior cardboard book all that easily. You have to unfold the digi-pack to get to the disc you want to watch. I don't know, maybe it's just me, but I'd much rather have slim cases. Similar to those used in the fan collectives and most other TV shows on DVD.
I've been kicking around the idea of buying slim cases and my own artwork for the discs. Maybe that's a project better left to when I have an usual amount of free time on my hands.