That's one of the things that would help. Particularly for scientists and engineers. The salaries are way below what they could achieve in the private sector (often doing the same or similar work with contractors, in the defense industry).
Depends on your area of the country. In tech-dense areas with high costs of livings, the adjusted cost of living to federal civilian salary doesn't nearly catch up. However, there are many, many bases in suburban and rural areas where an early career income is over twice the median income and you get a lot for the money.
