London City is still a 5.5 degree slope. I think i'm right in saying that someone has recently started operating Airbus 318(?) into there. Must be interesting the first time you do it one of those, it looks odd enough in KingAir nevermind anything bigger!
As for the 777 and a 4 degree slope being unworkable because the autoland is only certified to 3.25 degrees......can't you hand fly that a/c and actually land it yourself or am I missing something