Actually, things are more complex. It cannot be based on AbstractLink without some hefty refactoring. The PagingNavigation*Link classes need to be able to trap when the link is clicked - AbstractLink does not provide this hook. And, unfortunately, SubmitLink has a onSubmit method while Link<T> has a onClick link. What would have to happen is some sort of interface like IClickable be shared between the two classes - or maybe SubmitLink can inherit Link<>?
Otherwise, the only real alternative is to make an entirely separate hierarchy of: PagingNavigationSubmitLink, PagingNavigationIncrementSubmitLink, SubmittingPagingNavigator, AjaxSubmittingPagingNavigation, AjaxSubmittingPagingNavigationBehavior, AjaxPagingNavigationSubmitLink, AjaxPagingNavigationIncrementSubmitLink, and finally, AjaxSubmittingPagingNavigator
Quite a few classes to reproduce just to have a navigator within a form.. I still don't have a working version, and I'm leaving the office. I'll report back tomorrow.