Starwood’s Starpoints are already the most valuable loyalty program currency.
They have the most airline transfer partners where points transfer 1:1 and of course when you move Starwood points into 20,000 miles you get 5000 bonus miles. That gets you effectively a 1:1.25 transfer ratio with most airline partners.
Now, Starwood has added a new transfer partner and it’s a really useful one: Korean Air Skypass.