But any effort to revise or tighten the rules would be under at least three major constraints (among probably dozens of minor ones):(1) It has to remain consistent with all the cards released so far. That is, any rules revision for attacking can't require any changes in the card text for Proton Torpedoes.
While this is certainly a major goal, I don't think this is as absolutely necessary as you suggest. Magic underwent a huge rules revision for their 6th edition that necessitated hard errata to the wording of vast numbers of existing cards and it didn't break the game.
By all means, try to keep the errata to old cards to a minimum, but the game needs a rewrite of the rules and I don't think needing to change the wording on a small percentage of cards should prevent that.
