One of the AA posted in the theoretically possible, but not guaranteeed Underfoot AA list in EQplayers was a Grpshrink AA, like the bst already have.
I for one would ask that we try to not get this AA and instead push for a targeted, quickcast, fast reuse targeted single shrink, along the values of the Erarring of Dimutiveness.
There are enough situations in grp and raids where a general grp shrink is not wanted. Be it high stairs or similar obstacles. I think a single shrink AA would serve us and the other players better.