Just a wild thought I've had lately. What about a binder or slipcase where all the FTD cd's themselves, sans digipak fit into;, maybe not unlike the recent digipak-book packaging for TTF and the Silver/Gold/Platinum box sets. Since the annotation in the digipaks is sparse at best, track commentary could be expounded upon in the new housing. They could have different books, for every 6 or 8 FTD cd's perhaps.
The band Phish did something somewhat similar, they have a binder that can hold all their live albums. Picture below.