Is there any reason why it is a small b instead of s? Maybe if you can explain it more people will agree with you, although it is unlikely to gain large traction since the community is way too big already. If you plan to use it on your own websites/blogs or something similar, people might also get confused since you use different symbols.

That's right, compared to now it would be difficult to encourage users to use your symbol, especially if it indirectly clashes with the previous one.