closed as primarily opinion-based by JonW♦ Sep 30 '13 at 8:30
Many good questions generate some degree of opinion based on expert experience, but answers to this question will tend to be almost entirely based on opinions, rather than facts, references, or specific expertise.If this question can be reworded to fit the rules in the help center, please edit the question.
The most common mistake with wireframes is not tailoring the output for the internal audience - that is those that need to use it.
Unless working for the same company / people / process each time then the same deliverable is unlikely to be right for all situations.
Additionally there are times when annotated designs or mid fidelity prototypes are best or, in other situations, a sketch on a whiteboard might all that is needed to get the work done. If wireframes need to be highly detailed it may be a sign that UX and engineering are not working close enough together.