It's definitely no "let's just do it over the weekend" job, but otoh, you don't have to do it all at once, nobody uses every tool. You'd probably need to still roll out by unit or at least in waves (e.g. for the unit that handles building permits, which is much less complex).

I do agree that there's no good incentive. The other reason I've learned is their organizational issues: heavy focus on certifications, much lower salary vs private industry, heavy on the bureaucracy and office politics, and a lot of dead weight. That doesn't get you skilled people with plenty of motivation, and you get the outcome you'd expect.