The things I don't like about XEP-0136

Update 7/12, 2010
* "version" attribute of a collection. It seems isn't used anywhere.
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Update 7/7, 2010
* note Element of a collection. What is this element for? I only see how to set, but don't see how to retrieve. Is it useful for users?
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MattJ want me to give a list of the things I don't like about XEP-0136, now here is the list:

* 'secs' attribute of from and to Elements. It's inefficient and hard to figure out this attribute when archiving a new message. Using a timestamp(like the 'utc' attribute) would be easier.
* It's NOT easy to find out duplicated messages.
* Linking Collections. I think it's not very practical. :/
* Collections. Without the 'thread' element, it's hard to determine which collection a new message belong to.
* Each collection of messages and notes is uniquely identified by the combination of the 'start' and 'with' attributes, but we're using 'thread' element to map messages and conversations to collections.

That's all for now.

It's said that XEP-0136 will have some improvements. Happy to see that, :)