My major issue here is not really whether or not those attributes exist but the fact that there is no real review of their implications. We mainly hear of how useful they can be for some existing implementations but it'd be a shame to realize in a couple of years that they were in fact bringing more issues than solving problems.
Call me paranoid or picky but I think a few questions that have been raised here were valid ones. Besides this is the all point of this list isn't it? ;) Of course I wouldn't want the community to split. - Sylvain
