The Claw of the Khan-Ur is also a symbolic weapon with 4 gems and 4 blades - the gems are of different colors (red, grey, black, and gold) to represent the four High Legions and the four first imperators of the first Khan-Ur. The weapon is needed if one wishes to become the next Khan-Ur but it is not the sole requirement, one has to convince the other 3 imperators that they are worthy of wielding the weapon and leading all four legions. Its power appears to be solely symbolic and it is very difficult to wield due to 2 blades going backwards making it easy to cut oneself with it.
The ghosts made by the Foefire are said to be stuck in time, constantly reliving the day of the Foefire and are also full with bloodlust and are quite insane. Unlike normal ghosts, when killed they will simply reform instead of moving on like we've seen before (the Primeval King in the Desolation and the king's servant both moved on when "killed"). These ghosts also view everyone they see as charr or, at best, allies of the charr.
The sole exception is Adelbern, who seems to have retained his individuality and previous persona. However, due to being insane, he believes that he pushed back the charr forces the day the Flame Legion imperator invaded the city and he believes he and his men are still alive - or seems that way at first. Likewise, all ghosts believe they're alive, though they still do not exempt themselves from being able to use their ghastly abilities - like flying and going through walls.
Adelbern also mentions that he wishes to rule all of Tyria (when he sees the golem made by the Golem's Eye, he claims that he wants the power and with it will drive out all charr out of Ascalon and take control of Tyria - which Tyria he meant is unknown).
The Dragonbrand reminds me of Glint's lair - crystals plants and everything are in the lair. The only difference is that Kralkatorrik seems far darker (and adds in the blotting out the sun with constant thunderclouds) and is always a purple color - Glint's Lair outpost however shows blue coloring.