Originally Posted by
MikkoAkure
ALL jobs had spammable AoE potency reductions, not just MCH. ALL jobs also had their other AoEs buffed so that damage doesn't fall off as much (more damage) to targets after the first, including MCH.
On the other hand, in regards to why it didn't get buffed specifically, your guess is as good as mine. According to the tool tip, pranged aren't going to be "as affected" by upcoming content like melee and casters, which insinuates mechanics causing downtime for both of those but I think the genre of job is in a worse space in general than the other two and could use some help before the 8.0 overhaul.