Looks like some players still want to play her Fury-style, which is fine by me, but it shines much more with a different play style.
Unlike the Fury, the Valkyrie isn't a hit & run glass cannon kit, but rather a "walk into the crowd of 2 Primes 3 Hunters and 3 Pyros and withstand damage, while constantly draining shileds by putting out a fuckton of damage, and go home"-kit, so 1.25-1.50 sec CD is absolutely not necessarily, with running around like a "hamster on coffee", teleporting all over the place and ****.
I personally go full DR on the tech armor, and Radius/Damage Taken/Drain on the AF, equip the Piranha or Raider (both give you between 70-120% cool down, which is about 3.5 seconds on Warp, perfectly enough to keep the BEs going, while killing everything else with your weapon).
It's almost impossible to die if you play smart, know your limits and especially if you're on-host, so the AF and Warp don't **** you, whenever you need to drain shields the most. Cyclonic III-IV and Geth Scanners are a very strong recommendation also, and of course there's always the incindiary ammo+warp cheese, if that's your thing.