Let moderators offer a protection status visa to certain questions under constant non-answer fire.
Much like Wikipedia, this would allow users above a certain level of reputation (but at what level?) to be able to continue on answering/editing questions, which would normally have been locked.
When a question is seedy enough to glue the eyes of spammers, they flock and post all sorts of spam-answers. Then there are those that attract bees buzzing, "Me too!" and "Thnks! Had same problem, your solution worked" comment-answers again and again.
While these may be a good way to break in a new mod in deleting these flurry of non-answers, they also tend to find themselves under the locked status as the only recourse from the spam and noise.
Unfortunately, when a moderator locks a question, no further actions (apart from flagging) are allowed.
Should this be part of the arsenal of moderation happy fun janitorial tools for 10k users? Something for the quiet 5k level perhaps?
This isn't to overturn what it means to lock a question, but to keep those good on-topic questions (which unfortunately happen to play a siren song what draws out the non-answers) from being frozen out of generating the votes and ever burgeoning field of real answers and helpful edits.