Unfortunately that kind of gameplay was already niche and is only getting even more niche. Everyone wants quick 2-3 shot kills like CoD. Obviously APB doesn't need multi-second long ttk (even though some of the best dueling games I've ever played were multi second long fights or even longer) but it really does benefit from being on the longer side. Especially in a third person game.
Don't even get me started on the people that will somehow make the argument that GUNS KILL PEOPLE QUICK. ITS NOT REALISTIC TO TANK MULTIPLE SHOTS. I hate to keep ragging on CoD because honestly the games aren't as bad as the rep they get from people that don't play them, but they really were the start of the sort of casino slot machine ttk. Games that don't ascribe to the lane map design, mercy of spawns, and short ttk that promotes just pulling the slot machine over and over and everyone gets some micro wins constantly to keep them engaged are almost always the ones that fall to the side. I'm just rambling now even though I could go for days.