Transits are ok. But who in his right mind came up with the idea to seperate arrivals from departures and give all those pax who have to clear customs a magic bus tour of Doha? It's insanely stupid and very frustrating when it could have been so easy.
Also, why is there no tunnel under the runway? See comment above, again!
Anyway, back to topic. Apologies, had to get it out of my system.