MM2 had plenty of cool monsters. The new giants, the gem dragons, the phoenix, the leviathan, new dinosaurs, new dire animals, the linnorms, the first MM to print yugoloths, etc.
Again, it brought back a lot of old favorites that have just as much right to be in 3rd Edition D&D as any other creature. I do agree that the problem is WotC has yet to do a "Monster Manual 2 Revised" book.
However, if the CR is what's bugging people, lower the CR than.
If it's the ability scores, pump them up or lower them as needed.
It's a little extra work, but it's worth it to me if I get to use the Dread Linnorm, for example. My players remember that dragon from 2E and they were ecstatic to be able to battle it again in 3E.