I'm working at a European public university. While I don't have the same status as a researcher, I help social sciences researchers with the design of quantitative studies and with statistical analysis. This is a role similar to a research assistant, even though it's not my official job title. It's not unusual that I cowrite papers and train researchers and students.
For years, it has been a researcher (not always the same, they change every 3 or 4 years) who conducted my annual performance review. The university wants to change that and put an administrator in charge of it. The researcher who conducted my review last year and was also supposed to conduct my review this year is not really supportive and probably won't fight the uni about this, even though we planned to discuss this issue in a very near future. I think the researcher considers the performance review as a chore they're happy to get rid of; I somehow understands this, as everyone is overwhelmed with work, but this wasn't a problem with my two previous reviewers.
The admin person, who has been recently recruited by the uni, doesn't know anything about stats and doesn't have any knowledge of my domain of research. In fact, the person initially thought I had a secretary job, which is something I politely clarified right away.
Note that some other people at the university have roles similar to me. A few direct coworkers of mine will have the same "change of reviewer" applied to them (they'll be reviewed by the same administrator as me); but in other university departments, people with similar jobs will continue to be evaluated by researchers. So this is a policy targeting our specific group of coworkers.
First, I'm afraid this could impact my career negatively: where I work, career advancement is partly examined by peers, on the basis of what the performance reviews say; I'm also concerned about what a prospective other employer would think if they were to contact the uni and the person who conducts my performance reviews.
Secondly, I'm afraid the person would use irrelevant indicators to judge my work, which I think ethically is an issue relative to the context of scientific research. I think evaluating my work requires knowing the scientific value of what I'm doing.
My coworkers share the same concerns. So I wonder what is the experience of other people about that, to take a better informed decision on what I'll do next if this change is imposed on me/us. I'm OK with looking for a job elsewhere, but I want to examine all my options before taking what I consider an extreme decision.