We spent a lot of time tuning it. We've found that temperature settings really aren't needed for most use cases as long as the heating algorithm is responsive enough.
But that may not be for everyone: With the Power Station, changing the temperature is fast and easy with the dial, so you can pick a workflow that works best for you. (You can also change the temperature with the web interface.)
Appreciate the response! I'm still not immediately sold (my TS100 is doing great and I can't justify replacing a perfectly acceptable iron), but I'll have to give it a try sometime because it does look really thoughtfully designed!