Limits the visibility of a level on the Levels page. Unlike setting "Allow Signups" members can access the checkout page to renew if needed.

pmpro-restrict-visibility-of-levels-on-levels-page.php

<?php
function djn_pmpro_save_membership_level($level_id)
{
	if( $level_id <= 0 )
	{
		return;
	}

	$limit = $_REQUEST['pmpro_show_level'];

	update_option('pmpro_show_level_'.$level_id, $limit);
}
add_action('pmpro_save_membership_level','djn_pmpro_save_membership_level');

function djn_pmpro_membership_level_after_other_settings(){
	?>
		<h3 class="topborder"><?php _e('Membership Level Visibility', 'pmpro');?></h3>
		<table class="form-table">
			<tbody>
				<tr>
					<th scope="row" valign="top"><label for="pmpro_show_level"><?php _e('Show Level?', 'pmpro');?>:</label></th>
					<td>
						<?php
								
							if(isset($_REQUEST['edit'])){
								
								$edit = $_REQUEST['edit'];
								
								$pmpro_show_level = get_option('pmpro_show_level_'.$edit);
								if($pmpro_show_level === false)
									$pmpro_show_level = 1;
							}
							else{
								$limit = "";
							}
							
							?>
						
					
						<select id="pmpro_show_level" name="pmpro_show_level">
							<option value="1" <?php if($pmpro_show_level == 1) { ?>selected="selected"<?php } ?>><?php _e('Yes', 'pmpro');?></option>

							<option value="0" <?php if(!$pmpro_show_level) { ?>selected="selected"<?php } ?>><?php _e('No', 'pmpro');?></option>
						</select>
			
						<p class="description">Show this level on the Levels page?</p>
					</td>
				</tr>
			</tbody>
		</table>
	
	
	<?php 
}
add_action('pmpro_membership_level_after_other_settings','djn_pmpro_membership_level_after_other_settings');

function djn_pmpro_levels_array($levels)
{	
	$new_levels = array();

	foreach($levels as $key => $level)
	{
		$pmpro_show_level = get_option('pmpro_show_level_'.$level->id);
		
		//means it was never saved
		if($pmpro_show_level === false)
			$pmpro_show_level = true;
		
		if(!empty($pmpro_show_level))
			$new_levels[$key] = $level;
	}
	
	return $new_levels;
}

add_filter("pmpro_levels_array", "djn_pmpro_levels_array");