Probably should. While I'll admit it seems more advanced than TERA slightly, they both fall into the same realm and TERA's extremely fair F2P model would put serious pressure on B&S in a subscription system.
I agree with this.
I like Tera combat more, which would keep me on Tera instead of paying for another game, but if BnS were to be F2P as well, I would definitely prefer it, since it's prettier and overall better in other ways.