I am not sure, if this was already written as suggest.

For designing view files (default_grid.php), it will be much easier if jDOM will have one more middle layer.

For example:
Now we have in default_grid.php:
<?php echo JDom::_('html.fly', array(
'dataKey' => 'title',
'dataObject' => $row,
'route' => array('view' => 'item','layout' => 'item','cid[]' => $row->id)
));
?>

I would like to have jDOM_html.php and default_grid.php
In jDOM_html.php we will have:
$jRow[title] = JDom::_('html.fly', array(
'dataKey' => 'title',
'dataObject' => $row,
'route' => array('view' => 'item','layout' => 'item','cid[]' => $row->id)
));
and then in default_grid.php we will only have: echo $jRow->title;

Bingo, in V2.0 it is instancied such way.

... with JForms.