Can you elaborate? I think I know what you mean, but when I clicked the link it already seemed to be a "more advanced bc" to me. What are you missing, big numbers (that's what came to my mind)?

If you're looking for something more advanced while still at the command prompt, check out "calc":

http://isthe.com/chongo/tech/comp/calc/

On Fedora:

sudo dnf install calc ; alias bc=calc

what features from bc do you need? Have you seen calc (the calc package in debian/ubuntu)?