AHh right... I forgot that in DDO maximize is x2 instead of, well, maximum.
However, we are making what is perhaps a bold assumption that this spell would be used by Maximize-using MOBs, and the track record of these things in my experience is that they would not have too many scenarios where this sort of damage would be spammed out at the players (though I expect eventually we'll see the players spamming it out at the MOBs).