Thread:Brandon Rhea/@comment-24859896-20170613162243/@comment-20644-20170619193554

Admins have a number of customization options, but if a certain CSS or JS choice harms user retention and the ability to navigate the site then that is something that we will add to the customization policy as being disallowed. As for the notifications issue, not sure. I would suggest reporting that to Special:Contact so our Community team can take a look.