[XBL] multiple template, handlers, implementation elements

Dear XBL experts,

This email comments on the 7 September 2006 LCWD of XBL 2.0.
In Section 5 "Shadow Content", what is the purpose of allowing multiple 
template elements in a binding element if only the first one is used ? 
Is the use case of have multiple templates and modifying their position 
really significant ? Please provide an example.
Similarly, in Section 6.4 why allowing several implementation elements 
in the binding if only the first one is used? or in Section 7.1, several 
handlers elements in the binding if only the first one is used?

Typo in Section 6.4: "the the private object"

Cyril Concolato