Keg, your suggestion has been raised to management a number of times and reviewed by a couple of 'working groups' and gone no where.
Whilst I agree it's not a pilot/airline issue maybe the pressure that can be applied may lead to an outcome that will benefit everyone.
In the meantime, please have a listen before calling (which I know most do) work out if a read back is pending and then go for it - as crazy as the job is, it's part of what makes working 121.7 so enjoyable (most of the time!).