Did you find some feature/bug fix introduced in 2.5-2.7 versions of Cordova critical for your application?
I started this thead because I noticed that the prompt dialog didn't work in my project. I found in the Phonegap documents that this is a relatively new dialog that doesn't exist in Phonegap 2.4.x. I ended up creating something with html and css, but this took some valuable time.
I appreciate the time you invest in development of the Icenium tools and I don't think that skipping a Cordova version doesn't hurt many people. However, I feel that being one version behind Cordova would be acceptable.
Curious to hear what other people think!