Not currently, but we can add hooks! Will let you know when it’s integrated.
Aloha, version 3.6.0 should include the filters you need for your customizations.
insert_pages_available_templates:
https://github.com/uhm-coe/insert-pages/commit/ef9b2d273ef00ef91879cc98301446ce8f7ab35e
Example:
add_filter( 'insert_pages_available_templates', function ( $templates ) {
// Remove unnecessary theme template from Insert Pages modal.
unset( $templates['your-unwanted-template.php'] );
return $templates;
}, 10, 1 );
insert_pages_tinymce_state:
https://github.com/uhm-coe/insert-pages/commit/35053c8d842e5506c4446d83ad6e5dfb39e76528
Example:
add_filter( 'insert_pages_tinymce_state', function ( $tinymce_state ) {
// Default to always use a custom template.
$tinymce_state['format'] = 'template';
$tinymce_state['template'] = 'your-custom-template.php';
// Hide the querystring and anonymous users options.
$tinymce_state['hide_querystring'] = true;
$tinymce_state['hide_public'] = true;
return $tinymce_state;
}, 10, 1 );
Let us know if you run into any problems. Cheers!