We don't need digital counts of exact number of rounds remaining. AW had a gauge 0-100%. What's wrong with that for AH?
OTOH, a gauge is a gauge, exact count or not, so why bother to change it?
For me, no big deal, I fly the same plane all the time and know how many rounds is 100%, 50%, 25%, etc. But those that fly different planes all the time would have to be more farmiliar with how many rounds those percentages represent.