Shorthand computed properties over array properties

Hi, I am loving the computed properties and powers of Ember. I am still unclear about some array-related syntax and capabilities. The first question that could answer several others for me is whether this kind of computed property can be written as a shorthand, e.g. using Ember.computed.or(…)

isChildMatched: function() {
	return this.get('childNodes').anyBy('isMatched');

And further I wonder whether there are plans to implement more shorthands, especially supporting arrays, like Ember.computed.everyBy(…)