I don't really think airport design matters as much as people doing the checks. Just flew from Prague to Sofia and both airports were very fast to pass through

I don't really think airport design matters as much as people doing the checks. Just flew from Prague to Sofia and both airports were very fast to pass through, in Prague with online check in, just scan boarding pad to get through gate, go to passport check, then walk through unnecessary shops to security check right at the gate and wait for flight work my kid playing in kid corner with water fountain and toilet nearby plus free wifi, everything I need. Both checks took minutes with max 2-3 people in front of me. Immigration in Bulgaria also quite fast, officially landed 14:50, in less than an hour have been in central bus station 15 subway stations away including one transfer. Though not sure whose idea was to paint navigation to subway in airport as line on floor, while I'm looking for signs above. Also can't swipe one bank card at same turnstile for more passengers, I can understand why, but it should be communicated better than Invalid card, it should say Use another turnstile or card.