yes, I think query parameters should definitively be inherited per default. I think that users expect this to happen if they use the parentId feature. We are currently discussing how to handle the inheritance of URL actions. In the current snapshots a child mapping will simply inherit all actions from the parents. But this may not be desired in all cases. See my post here for details.
I hope the new inheritance code will work for you. I think you will be able to drop your custom ConfigurationPostProcessor in the future as PrettyFaces will do everything for you.
Regarding the avatar: The forum is using gravatar.com for the avatars. Just sign up there with the email address you used for your forum registration and it should work out of the box!
Have a nice weekend.
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