Where's the payoff? All I see is a system that had to work first time, so "agile" wasn't even an option. If there were an auto-update mechanism to get everyone on the latest version, it seems to me that you might have delivered months earlier and polished it over time.
It didn't have to work first time. People expected it to work first time and the expectation was fulfilled. Would you deliver a stinking turd first time and spend 6 months fixing it? That appears to be the way people want to work these days but believe me the customers are fucked off with it. The entire industry is getting a bad rep due to this laziness.
You're making bad assumptions. You can either deliver a "stinking turd" in a month and spend 5 months fixing it, or spend 6 months developing and deliver the whole thing in one go.
