While reading this question (Controlling 500 LEDs with PWM), I noticed that none of the answers addressed a design issue of LED brightness variability in a batch, factor that I thought could impact the OP's design.
I added this answer to highlight the issue that I thought was relevant, and right away I got a comment complaining that my answer brought a valid point but didn't answer the question.
My meta-question is: Are answers like mine valid for the site and appreciated by the users of EE.SE?
In other words, Can I post answers that address side issues that are relevant to the question at hand, but have not been answered properly by others, but doesn't answer the question completely?