We have <bt> available, but the problem is that it will only activate on the party battle target. It will not work, however, for the alliance. If a different party in the alliance has hate, <bt> will not change targets.
My linkshell has used a macro for many years to keep track of hate when fighting creatures using a kiting method:
/assist <t>
/wait 1
/p ** has hate! Run away!**
/targetnpc
/wait 1
/target <bt>
This works fine for the most part, but the problem is that if there are (1) multiple creatures on the field near the initial target creature and (2) a different party in the alliance has hate, the macro may fail.
Therefore, I am requesting a <at> macro for alliance targets, not only party targets. I hope this makes sense.