[@sxalexander Member 12 years, 6 months ago]

Thanks for the in-depth response, Jennifer. This is very helpful.

[@sxalexander Member 12 years, 6 months ago]

I can echo this. I’d like to hide this functionality from my users to clean up the interface if possible.

[@sxalexander Member 12 years, 7 months ago]

This is a bit late, but I think there’s another way to solve this.

I think the most WordPress-y way to accomplish this is to add the following to your theme’s /functions.php:

add_post_type_support('forum', array('thumbnail'));

This will add the featured image metabox to all forums. See here for more details:

https://codex.wordpress.org/Function_Reference/add_post_type_support