On the soon-to-be-extinct official forums you still get the occasional gem of feedback. Today's is a poster asking for
"A way to cast Revenge when not the taking damage - e.g. "when the player with Vigilance takes damage, there is now a 20% chance to allow the use of your Revenge ability" or something similar. One reason protection warr. dps is so much lower when not taking damage is because we lose Revenge, which has become our hardest hitting ability."
GC's response is
"I think this is a valid point"
Yes! This would improve the prot warrior's offtanking rotation massively - Revenge is cheap (since rage is in short supply when offtanking) and hits like a truck. Linking it with Vigilance is clever because it keeps the unique flavour of Revenge.
I believe the current iteration of Vigilance is also to allow the Vengeance buff to develop too, so again we will have a way to keep our AP high when offtanking. One of the great weaknesses of warrior tanking is our offtank dps, and both of these changes would make a big dent in the problem.
I hope very much that GC and the rest of the developers give some thought to this idea.