Performance review should be taken more seriously as a monitoring tool (and a psyche session) for the business and it's employees. Major corporations have put them in place to off set mini problems that can turn into large problems and/or liabilities.
I know most spas and healing arts workers don't want to hear the word corporation, but I will contend that some great tools can be pulled from them Here are a few good things performance reviews contribute to;
Leadership - and recognition of team leaders, growth and laggers
Strategic Quality Planning- you can introduce procedures and long term planning more easily
Information gathering and analysis of that information
Human resources development and management - improve training- check on progress -introduce training
Quality control and operational results- sustain your objectives and keep yourself and your team on track
Employee and client satisfaction- review of personal, professional and client issues in safe setting
Liability - limit liability by knowing what is going on at intervals rather than when it explodes
Decision making- facts for pay raises, incentives, warnings, firing's, idea generating, and paperwork tracking for your own insurance purposes.
It sounds like a lot of work, but like anything, once you make it a permanent part of your schedule, you can roll with it.
Enjoy your day!