I got the idea for a no DC build from trying melee once (Since it's normal to put only 3 points in DC just for distant Warp Ammo priming). As well as seeing someone's N7HQ Fury build without DC and me making a note of that (this was a known top/respected player too. Might of even been Megabeast). So fast forward to new manifest and much more power focus play style, since that was my only ticket to playing Gold or Platinum right away, and I noticed I barely wanted to toss that DC out when playing Fury (bosses being the only exception, but even then it felt like it was getting in the way of my rhythm with such a massive cooldown in comparison to Throw).
And I really just wanted to practice being better at this kit as a pure AF > Throw CQ focus (so I'd rather go in for a second biotic combo then finishing a mook off with my weapon. And the stagger from a second biotic combo does area dmg to other nearby mooks. So not shooting too much with Fury actually works out for the better). And pure CQ AF > Throw is what makes her unique anyway. I really need to the variety at this many hours into this game.
The extra shield regen and fitness from max fitness actually helps too. Plus opens my up my consumable choices in this area to favour AdrenMods the most, followed by others too depending on what I have most of (Cyclonic, Power Amps, and even Shield Recharge works great on her to my surprise even though she already has a shield drain move in AF).
And skipping passives to DC is no option either, since the power amps and power passives really helps AF DOT. With passive power contributing bonus force to Throw, which converts to extra dmg too.
That, and she's already crazy OP. If I toss in DC and always make sure to toss it out every now and then, it really contributes greatly to free epeen dps. Just like whenever I play Huntress, epeen always seems to come without any effort just because DC is that OP (especially on Huntress & all 6 glitched Ascension mode Collector). Still, having Fury with DC is still the optimum way. But so is AIU Reeger and other nonsense I'm sick of seeing. ... Even still, maxing fitness & passives really makes pure CQ Fury much more enjoyable and relaxing (ie. easier, makes playing on Terminator pipe much more relaxing and with less paranoia, and encourages more risk).