Why, exactly is rapid shot superior to TWF? Both require 2 feats to use, both suffer a -2 to all attacks (if you have the TWF and Ambi feats) TWF gets 1.5 Str bonus to damage on 2 successful hits, while archery doesn't get any bonus to damage.
and for those who say: "but what about the mighty X?" If the campaign is run properly they should be nigh on as rare as a magical bow!
I don't know about GMW as it hasn't come up in the campaign I'm playing, but if that spell simply didn't exist what would the problem be?
I am not accusing people of power-gaming, but playing an archer can be equivalent to a TWF combatant if you simply don't abuse the system.
Maybe the problem is not with the rules, but with the players?