add_setting and add_control: can I dynamically create them?

I want to know whether or not I can dynamically create new settings and controls.

What's the use case? I want non-technical admins to be able to go to the Theme Customizer to be able to add titles and URLs to a "Featured Pages" and "Featured Posts" section of the home page. However, at the current moment, I have to hardcode each setting and control, such as "setting_1", "setting_2", etc.

I've considered using get_theme_mods, but at this point, I don't know how I could use that with a dynamically generated set of settings and controls.

Here is what I have:

$wp_customize->add_section('sidebar_settings', array(
    'title'         =>  'Feature Sidebar Settings',
    'description'   =>  'The Sidebar section allows you to select feature pages,
                         posts, and other documents you believe would be valuable
                         to P2C staff and show them directly on the homepage.',
    'priority'      =>  '201'
));
$wp_customize->add_setting('feature_pages', array(
    'default'       =>  null,
    'capability'    =>  'edit_theme_options',
    'type'          =>  'theme_mod'
));
$wp_customize->add_control('select_feature_page', array(
    'label'      => 'Feature Pages',
    'section'    => 'sidebar_settings',
    'settings'   => 'feature_pages'
));

if I have to add each setting and control, that's really tedious and not efficient! haha

-Stu