Making yourself available during nights and weekends will dramatically increase the quality of your hires because top performers are employed and are often only available then. Slow hiring means that you will lose diversity candidates. If you are replacing an average performer a new hire is likely to increase your over-all productivity. Hiring the right people reinforces our culture. HR people will put less emphasis on your positions as you get the reputation of not taking hiring seriously.
Statistics are from a composite of top performing firms.