When the merger occurs, let's presume that WorldPerks will go the way of Delta FF... either used up at the old redemption rates, or converted to SkyMiles. So figure WorldPerks will be around for 2-3 years (retired 12/31/09 or 12/31/10, depending on how quickly they can do the backend IT?), then retired (used or converted). Any similar or competing theories? If that's the case, what's everyone doing?

For me, I've already been down the SkyMiles road, and won't go back. I fly NW for two reasons... I'm a hub captive and truly enjoy non-stops, and WorldPerks. When WorldPerks goes away, I'm not doing SkyMiles. I'll fly hub flights if I can (code-shares between NW/DL and UA/CO?), or just learn to go back to living with connections.

Steve B.