I think it is also a question what purpose the CD release was supposed to have. I don't think they wanted to create a real "Official Album" in the meaning of the according CDs released by Randy for the US resorts (and as TDR does for its parks). Instead the current release IMHO was supposed to be an anniversary release celebrating 20 years similiar to what they released for the 5th, 10th and most recently 15th anniversary - and similar to what TDR released for the anniversary of their parks (which also center these anniversary CDs around entertainment music).
However, I think it is disappointing that they went back from a 2CD set for the 15th anniversary to a one CD release for the 20th - even so more unreleased material has accumulated in the meantime (TDR for the recent anniversary of TDS even did a 3 CD set). Maybe they should have considered releasing the CD as now released as a general release and a 2 CD set for the fans (as TDR did for the recent anniversary of TDS, just that it was a 3 CD then). Heck, they could have even played the same trick on fans and collectors as TDR did with the TDS anniversary releases: including one track on the regular 1 CD version of the album which is not included on the 3 CD version so that collectors will consider buying both.
A 2CD set would have allowed DLP also to include more material and in particular more so far unavailable or at least no longer available material. Considering the very few releases even of entertainment music between the 15th and the 20th anniversary there is plenty of "new" material they could have included (music from the character train, the various Central Plaza stage shows, the first and / or second version of Stars'n'Cars, Snow White Happening, Mary Poppins Happening, ...). Going back into the time before the 15th anniversary there is also still quite a bit of music material from entertainment that was never released (e.g. the Beauty and the Beast Happening, Aladdin Calvacade, Pocahontas show, ...). But hey, there is the 25th anniversary where they get their next opportunity.
Finally a question for those of you who already got the new CD (I plan on picking my up this weekend): are the tracks "Moon" and "Moon (reprise)" from "Rock Shock" previously unreleased tracks or are they identical with / were they part of the track "Rock Shock" running 6:35 from the 10th anniversary CD??
Dirk