I was just thinking about friends requests and how normally when someone sends you a friends request you'll need to view your profile and click 'manage friends' to view and accept/deny a friends request.

Not sure if this has been mentioned before, but I think it would be helpful to receive a message notification for a new friends request.

Yes, but I want the option to turn it on or off.

Also, if you are using d2jsp Instant Messanger you already get notifications.

Voted yes just because I agree with you.
Although, as Superman stated, there's already notifications if you use the Instant Messaging feature.

Suggestions for this has already been made and denied.

http://forums.d2jsp.org/topic.php?t=57941152
http://forums.d2jsp.org/topic.php?t=63139593