The only sense I can see is to run the Palm brand for a few years and "Nokia-nize" it until it wupti! becomes like any other Nokia phone. Maybe start off with "Palm by Nokia" and changing the UI to look more "Nokia" style. Until you just drop webOS and put Symbian or Maemo on "Palm" devices.

Then 2-4 years down the road "Palm by Nokia" Pré/Pixi becomes Nokia Pré/Pixi (or whatever else).

Use the Palm creative staff and their sales channels to strengthen the sales of Nokia in the US.

My Palm Tungsten T3 PDA was a fun little thing, but to me Palm is oh so 2003 and I don´t find them very appealing as a phone manufacturer.