I'm about 2/3 of the way through Shadows, and I had this same thought as well.I also thought Hoid showing up briefly as the carriage driver was a nice touch. The only thing lacking from this new arc so far in my opinion is full blown mistborns, though I can't imagine one won't show up at some point. Having allomancers/feruchamists and even a few with one of each like the main characters is nice, but it lacks the awesomeness of the original trilogy that we got with Kelsier and Vin who got to do all the cool shit.
Sounds awesome. I'm just hoping at some point we get some full fledged mist born worked back into the series.The next Misborn book, The Bands of Mourning
Amazon.com: The Bands of Mourning (Mistborn) eBook: Brandon Sanderson: Kindle Store