I concur. I definitely think that the Legends of the DCU story really does count as one of the better of the unofficial tie-in stories and I think it makes sense to include it in the a Crisis bind.

The Crisis Compendium is one of the most indispensable reference texts for COIE and has provided much of the lattice I used for my bind. However, it is by now means complete. Including the Amazing Heroes and the both indices are good inclusions. If you don't get the whole story, they will provide a good synopsis of the excluded stories.

I did forget to include after the History of the DC Universe 1 & 2, the 52 and Countdown Backup features "History of the DC Universe," and "History of the Multiverse." The first is available on the DC Comics Website the second I scanned.