WARNING - WARNING - WARNING !!!!!!
Not so much for the tower folks when this goes into effect, but the Center folks and to a lesser extent the approach folks..
We have found over the years that some crews who are not real proficient at reading the clearances over ACARs sometimes get them WRONG... They look at it incorrectly and program what was filed vrs. what was spit out by the host computer. They then tend to go where you aren't expecting them too and it causes heart palpitations <G>... Careful out there...