I agree with the sentiments above - the framework should provide basic services and give others the ability to extend it. However I think there is a lot of value in making it easy for folks to use popular bindings. I for one, am not a big fan of having to incorporate additional code into my project to handle common extensions.
>From what I know, OGNL has a special place in Tapestry history - adding it in an optional "3rd party/contrib" module (but still part of Tapestry standard download) should help adoption of T5. Szemere
