Evidently CCP has discussed nerfing highsec awoxing with the CSM. This is in the recent CSM minutes. So, what do I think about it?
Generally, I agree with the plan. Awoxing is horribly unintuitive for naive players, enough so to break their willing suspension of disbelief in a very negative way. Also the violation of trust is considerable, and not something we want to promote in a game that is trying to get people to work together.
The ability to shoot corpmates does have some utility. The CSM reps bring this up quite effectively. (I.e.: webbing freighters, logi support, playing around, testing fits.) After considering this a bit, I think that it should be kept. However, 99% of the time, it is not needed. So, make it possible but never by default. Limit the scope as much as possible. Move it to a fleet setting. Corpmates in the same fleet can shoot each other if and only if the fleet commander has set a "free to shoot" flag for that fleet. When you join a fleet, you already get a warning saying you can't shoot people. You'd need a new warning for this. Also, players should be warned whenever their fleet commander turns on "free to shoot".
Note that this idea does leave open a small window for awoxing. Get in a corp, lead a fleet or sucker the command into turning on "free to shoot". Now you can awox everyone. I am OK with that.
There are arguments out there (i.e. James 315) that awoxing is needed to break up bad highsec corps. Well, it's colorable at least. But I think that the number of such incidents is quite low compared to the total awoxing that people do to corps that are good or indifferent. I also don't think that people who get awoxed even though in a bad corp necessarily learn the "right" lesson from it, as opposed to the lesson "EVE players are assholes". And finally, most players in a bad corp will leave of their own volition. Indeed, James has a posting up recently detailing just such a player.