I recently started an account on Android Enthusiasts, and went to add an answer to a question which was protected. I have enough rep on other sites that I have the "Association Bonus", so I was confused as to why I wasn't being allowed to answer the question.
This question is protected to prevent "thanks!", "me too!", or spam answers by new users. To answer it, you must have earned at least 10 reputation on this site.
After re-reading the message and reviewing a related question, I realized that the bonus didn't count as points earned toward that site.
This is a really minor issue, but I think it's worth fixing (not sure if bug or feature).
I believe that users who have enough rep to receive the association bonus should generally already know not to post "thanks!" and "me too!" style answers, so if the message is accurate, users who receive the association bonus should be able to answer protected questions.
If there's another reason to keep users from answering protected questions, such as Martijn Pieters' claim that:
For protected questions, you are expected to have experience on the target site itself. Experience at other sites is not enough.
then the message should be updated to reflect this.
Option 1:
make protected questions open to anyone who has >10 rep on that site and update the message to read:
This question is protected to prevent "thanks!", "me too!", or spam answers by new users. To answer it, you must have at least 10 reputation on this site.
Option 2:
leave protected questions the way they are, but update the message to read:
This question is protected to prevent "thanks!", "me too!", or spam answers by new users. To answer it, you must have earned at least 10 reputation on this site to show that you have experience on this topic; experience on other StackExchange sites is not enough.
Option 3:
Answer with your own suggestions/improvements to these ideas.