I dunno, I'd still take a 5% improvement. Let's say I work exactly 40 hours and week and 50 weeks a year. Then a 5% increase in efficiency means that I can do

I dunno, I'd still take a 5% improvement. Let's say I work exactly 40 hours and week and 50 weeks a year. Then a 5% increase in efficiency means that I can do 2 extra weeks of work per year. That's not a lot, but on a team of 26 programmers that's essentially the equivalent of hiring a new employee (without the downsides of a bigger team and the cost to bring someone up to speed).