But I live in a state with good firearm laws and I don't want the feds coming in and trying to level the playing field.
This is my biggest concern. If a national reciprocity proposal gains real momentum, expect Feinstein, Schumer, Boxer, Durbin and the rest to do everything in their power to poison it. They will insist on all sorts of exceptions and restrictions. I'd expect to see things like legally-binding "no gun" signs, a ban on carry on any government property, and opt-out clauses for individual cities and/or counties.
What we'd actually get would be a net loss.