Optimize classes_like_composite::render please.

Similar note as this.... It would be really, really nice if i could pass an array for $relId, and the return would be an array mapped by $relId:

public function render( $view, $relId, $opts=array(), $memberId=null )

This is completely unusable in any sort of listing(follow shown next to each record for use, as example), a query per result row is unacceptable, and getDataJoins is a joke, only forums returns anything beyond an empty array.