This allows you to arrive at almost the exact moment the gate closes because there will be no passengers for other flights in a queue with you. The gate agents can even see you going through security and will wait for a minute or so.
I still like Tegel a lot, as it's very close to the West center of the city.
My worst airport experience has been trying (and failing, twice; on consecutive days) to fly from Tegel Terminal C to Helsinki (EasyJet). My best airport experiences have been flying from Tegel Terminal A (Finnair) to Helsinki.
Unlike Tegel, though, the gate area and the screening areas are open spaces, with glass to separate. Tegel always feels a bit claustrophobic, and as a jet-lagged traveller my first time departing, I admit it took awhile for me to figure out where the hell I needed to go.
source: https://www.changiairport.com/en/airport-guide/departing/sec...