Here's a couple provocative questions . . .
Is it valid to perform individual evaluations on what are inherently team-based endeavors?
What is the purpose of individual evaluation?
Can "objective" measures "appropriate" for individual evaluation exist that do not, in some cases, conflict with what is needed to enhance the performance of the team or larger organization?
One solution is to assure that the processes support the need of the organization, and that the individuals follow those processes. If those are achieved, then everybody should be happy with their performance, and their evaluation.
It ain't people at the core of performance problems, it's conflicts between processes. The shame of it is that those conflicts don't have to exist.