Correcting some mistakes.
Well... in terms of suppression been given to small indirect fire, it was already tested and extremely disliked by the whole community and deems as one of the biggest mistakes done by Relic balance team.
It was applied to both the ISG and the Pack Howie and the game revolve around spamming 2/3 of them and just seeing how they would suppress and pinned everything from distance.
However, both ISG and Pack Howie was notoriously OP with their autofire model/squad wiping capabilities compared to mortars on top of having the suppression. Less damage on mortars with added suppression would be 10/10 better even this day since mortars can still get lucky wipes today yet being mildly effective against blobs.