Found ways out of bounds near the old Black Spindle quest from D1 (whatever it was called then).
Found the special Emblem for that Easter Egg (won't spoil where unless you want me too)
Found about 5 of those Rabbits, including one thats giving the stare down to a spooky red cat (Dreaming city statue, except Spooky Red like the other ghosts)
Found a Door we couldn't unlock, said we lacked data nodes or some such. There was a Rabbit inside there too
Loooooooooooooads of Lore bits.
Probably things I'm forgetting, but its been fun