As of my personal opinion, there isn't really a nice way to ask someone to BA your answer without coming across as just wanting points. I'd understand the mentality of wanting your hard work rewarded, but the main point of answering a question is to help people and not earn points. Also, a lot of users are new and don't know they can BA/ upvote an answer, so they just leave a question without BAing anything.
And mods still go through questions to BA them. From experience, Mew is usually the one to do that every few months, but trachy does the same as well.
If you want points, it's better to relax and forget about them; if you do you'll be expert before you know it.