Nice suggestion, thanks
Added to the first post
Yes, you can limit that through user permissions. Create a group, and only that group gets the "Can have a blog" permission. Then add the people that you want to that group.
Sorry, no plans for that
Care to elaborate? How is it killing it? It doesn't load? Permanentely redirect.
In your config.php you can add
That will disable all addons, then you can go to the options and remove it, or worst case scenario remove the addon and reinstall
I do offer a $100 professional setup for the subdomain, start a conversation with me if you want that. I did my best to make it straightforward, but every server setup is different and the combination of dns servers, web servers, plugins and rewrite rules can make it really tricky (hence the red warning in the options and the note that support for that will be additional)