Today I had to make a simple core modification to change just the ordering of usernames. I was thinking about, well, if you have TMS, guiltar's Template Modification System that allows you to edit templates without editing templates, why not have CMS, Core Modification System, too? This would be very useful for people who aren't experienced enough to make add-ons themselves, but are a bit familiar with editing core files to accomplish small things. For MyBB there is a similar plugin available if I'm not mistaken. Just an idea 
