buzz_knox gave a pretty level-headed evaluation of the possibilities I thought.
In evaluating what we can do for the pro-gun cause, we have to first look at what we have to work with.
We have a House of Representatives where we have a 15-20 vote margin (at best) on banning semi-autos on cosmetic principles.
We have a Senate where we are down 4 votes on banning semi-autos based on cosmetics.
After this election, we will pick up 2-3 votes in both the House and the Senate. If we only pick up 2 votes in the Senate, then who the vice-president is will be very important as we will either have a vice-president who opposed the gun ban on nonexistent plastic guns (Cheney) or a vice-president with a 100% Brady record (Edwards) to cast the tie-breaking vote.
Since our margin in the Senate will be razor thin, we will be completely unable to pass any reform that the Dems are willing to filibuster on. However, the Dems are already trying to pretend they aren't pro-gun control so we can force some victories through by controlling the dialogue.
In that area, I think CCW reciprocity and lawsuit preemption are probably two of the more promising bills that we could pass. Lawsuit reemption already has a majority of support in both Houses, we just need enough solid pro-gun votes to keep the Dems from tacking on killer amendments in the Senate.
CCW reciprocity would be even harder as the antis in the Dem party recognize the precedent this would set and might be apt to filibuster it using the same arguments of "blood in the streets" that have been proven false in many states now.
I think if we redfine an attack on the "sporting purpose" clause to simply acknowledge a "self-defense clause" we would be on strong ground. America still widely recognizes the right to self defense with a firearm. This would play well to a largely ill-informed public; but the antis would never let this go without a filibuster. At best we could just expose their agenda to a lot of people who think that the antis do not represent a serious threat.