What is most valuable?
What needs improvement?
Unlike PhoneGap Titanium, this product relies heavily on the existing Android ADK or iOS SDKs. This makes for a more complicated installation process that is not always straightforward.
Like PhoneGap, apps are obviously running within the browser control. Because of this, there is some loss in native experience and fidelity.
What other advice do I have?
Overall, the product is a very good development platform, once you get over the setup.
It has great resources to help development; training material and samples are available for almost any scenario.
Active development of the platform means new features are added and issues are addressed in a timely manner.