I am often against these sort of things but your gf is on to something with last one. tiny b and those 2 strokes are very fitting. I wouldn't mind if this catched on, but i doubt it. Bitcoin maximalists seem to be very much against any kind of change. Although this wouldn't be a change but an addon, and not to code but to visual "brand".

And there's the fact that people have hard time to grasp the whole bitcoin idea, so we have to be careful not to introduce too many new ideas in a row.