Ask HN: What do you guys *most* need in a simple HR system for startups?

I have been thinking on tools I may need once I go live with a startup. I believe some of the HR pain points for SMBs are: - Manage Time off requests - Travel expenses requests - Employee directory/profile & Agenda - Performance Reviews<p>This is something I see all the time on spreadsheets and documents.<p>1. Any other HR use cases you have in mind ? 2. Do you know any SaaS that does it aside of doing it in spreadsheets ?<p>Thanks