Doors to Automatic. New runway extension.
It really depends on many factors on the day, especially the flight crews/ captains preference.
Some don't like Tarmac behind them, thus use the full length. Some departures may require a 5 minute engine warm up ,if starting from cold. May as well use full length. If you are heavy more runway is useful, less engine wear or simply getting away quicker beating any ques, use E .If an aircraft wants to use E for it's departure and is holding at E,an aircraft behind is not able to get past and make its way to S. I often do performance for both.
Basically the extension is great, be glad when the current works are completed.