All tge chaos grand cruisers got a speed buff. I'm wondering if the hellfire is mistakenly kept at 150.
The hellfire being only 150 speed makes it worse than the repulsive. Even though damage wise they are almost the same with one difference. The repulsive has torps so it has a damage spike. And the added speed.
I'd suggest fixing the hellfire speed to 170 to allow it to be the medium long range brawler it should be.