So you want it to be, you win a round, keep the special you acquired and use it to keep the match a one sided struggle because you got 1 win out of 5 rounds? Correct me if I'm wrong but that's what I got out of it.

Trials needs its own ammo changes, not what it once was but different than other modes for sure. I'd suggest starting each round with no special ammo, removing or relocating the ammo crate in each teams spawn, and changing the timer to 15 seconds. This would combat ice breakers ammo regeneration as you'd only have a couple shots when special spawns and should force players out of their spawn. This would also promote more strategies, like do you go for the ammo or try to cut the other team off and engage them with primaries. On heavy round would everyone rush heavy or should someone stay back and get special and try to snipe the other team before they get it. It would shake things up for sure.

Trials is cancer. Special nerf? Everyone use NLB and ice breaker!!!

No. Trials is the reason why special ammo got changed in the first place.