defining quality of OOA and OOD models

How do you evaluate OOA and OOD models? In particular what do you
perceive as a "high-quality model" for each (OOA, OOD)?

Consistency? Completeness? Expressiveness? Translatability? For
whatever you use, how do you perceive that particular criteria, for
example what is completeness with respect to OOA models and what with
respect to OOD models?

(Note, please don't equate OOA with "high-level design" for the
purposes of this post, but rather something that helps us understand
and analyze problem domain. Indicate what criteria you use for
evaluation of design models at whichever level of abstraction under
OOD)

Thanks,
Davor

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