The code here could be improved call buildEditForm instead of:

$form = new \IPS\Helpers\Form( 'form', isset( \IPS\Member::loggedIn()->language()->words[ $recordClass::$formLangPrefix . '_save' ] ) ? $recordClass::$formLangPrefix . '_save' : 'save' );
$form->class = 'ipsForm_vertical';

foreach( $formElements as $name => $field )
{
	$form->add( $field );
}

this permise developers to add for example new tab

@Matt some details into mp (remove $collection)

is this solved for 4.2 @bfarber

thanks ?

This has not changed for 4.2 at this time

You fix it for 4.3? @bfarber

Right now we are focused on 4.2 for the most part  I can't say whether this will change in 4.3 yet or not.