Crash 3: ODST, there's your review...
Literally, thats what Travelers Tales did. They took the code from Crash 3, added newer graphics, levels, and bosses. There are no other improvements. The hub world is the exact same, the music is similar, the only thing that may be different is the story and that rolling in a ball level. The rest is a palette swap.
Travelers tales is guilty on this kind of thing on many other occasions too, they are a really low budget milking company. They are widely known today for working on the LEGO series (which is a total cash cow, next to Rock Band/Guitar Hero). They're almost as bad as Acclaim was, but a lot more successful, but that is getting off topic.
My point is, this may be ok to check out now, because you're not paying 50 bucks for it. But back then, this would be a kick in the balls to many Crash fans.