The main reason why its CD is so long, is most likely the enmity reducing part. Every other enmity reducing ability has at least a CD of 2 mins like quelling strikes, since it does a bit more it gets a CD of 3 mins.

I think it suffers a bit from the same issues as Holmgang. It tries to do too many things at once, which means that it doesnt do any of those things particularly well. All of the things it does are relevant in some form or another, the problem though is, that in most cases you really only want one of the three functions and in that case the CD might seem excessive.