one simple Idea how Nokia could encourage a lot of ported apps for Symbian and MeeGo: Take some of your cash and pay nitobi (or some really really other skilled guys) to support not only WRT but also a QtWebkit implementation of PhoneGap. (I am talking about 5 digits and more. Come on, these are peanuts and the gain is big!) At the moment the WRT is so much behind in features and speed that no good looking phonegap app for android or iOS would have any chance to run well on Symbian.
BUT if phonegap could use QtWebkit to wrap the app it should work much much better. Combine this with their new clowd building service and a lot of apps would just appear because they were created with almost 0 addition work.