I forgot one
If the enemies are weaker than you, now they run like you're the seventh ruler of hell
You can stull pursue, engage and give them the right pounding they deserve
More stuff:
The dragon can summon allies on the battlefield. It can steal an egg from somewhere that hatches the next round, spawning 100+50% of the hero's leadership things (can be various creatures) - provided the AI doesn't destroy the egg. Even if it does, it's a nice way to take a few hits off your army. Besides, the AI is still a sucker for summoned units.
Some skills require the dragon to rest for a few rounds just like the spirits of rage. However, there is a spell with which you can awaken it and force your pet to use its abilities on the next round as well.
The XP per action of the dragon is fixed for all it seems, not like Reaper's soul draining, for example. On the tooltip of each skill the dragon has is written the amount of base XP it will receive for performing that specific skill. That's a nice addition. I only need to test whether the use of 3-4 different skills will net the combined XP from them. The skill that the hero has for pet training, which forces it to get more xp per use of ability doesn't seem to be taken into account in the tooltip though.
Another one - and HELL IT'S A BIG ONE!
The Paladin Amelie no longer gets a resurrection scroll at start as it was in KBTL's Paladin. She starts with heal and bless inscribed in the book and a peacefulness scroll
The Amelie Mage starts with fire arrow rather than fireball spell inscribed in the book.
The Amelie Warrior starts only with 1 haste scroll.