[QUOTE=Tokiko Mima;2966195]Shield specifically states that it works against magic missile, as feeblemind specifically states what works against it. I'd say in both cases the specifics beat the more vague descriptions of the opposing spells.If you need a D&D example, Shield is generally accepted to block Magic Missile. Why? Because it says so in Shields description. If you wanted to insist, you could pull the quote out of Magic Missiles description that says "Magic Missile strikes unerringly." However, Shield is a spell whose only utility is defense. If it could not block magic missiles a large part of it's functionaity would be gone. If you allow magic missile to be absorbed harmlessly by shield it doesn't significantly reduce the spells effectiveness. Not everyone will have shields up all the time, after all. So in this case defense trumps offense.
BE is a multi-tool as you say, but multi-tools still don't work in every situation. There are still some jobs that you need specialised tools for.
Personally I think that if a DM has an NPC feeblemind a PC, with no way to reverse it in some way in the near future (either with another PC using a spell, a scroll that can be found, or access to something else that will help), then it's bad DMing. I've been in a game where a PC had a permenant hold person put on them, and for several game sessions the player had nothing to do as he was dragged around by the party in search for a cure. If the player had been going away for a few sessions, it would have been ideal, but as it was it was bad planning, and nearly led the the player leaving the group. But I digress...Allowing Feeblemind to be lifted by BE actually solves a major balance issue: No one will want to play an Int 1 character for several levels, or have to stop an adventure to go back to the nearest metropolis to pay some NPC for a cure. So I'm going to have to say that it just makes sense from a larger perspective, regardless of debatable semantics.
Feeblemind lists the tools that can be used against it, all of them from the same chapter of the book as itself. If you think that there was an oversight and BE was accidentally left off of the list, then you should feel free to pencil it in (or use it as a house rule), but I don't think that's the case, and that part of the challenge presented by feeblemind is finding the specific tool needed to reverse it.