We know that Zues does most of the coding himself. He's said the systems in the harrier are easy and simple to use and hard to code. Every couple of months he puts out a big WIP, the INS, the RWR, the TPOD. these things take time. Meanwhile he squashes bugs here and there.
Rob said in the interview they read the forums. And things that get reported get fixed (think RWR sounds. Or Maverick bug). With one guy making the fixes, I would personally rather see things get fixed than him on the forum all the time. But that's just me.
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