It seems better for power blitzers IMO right now.
I'm not sure what timer the replays are using but I'm just going to call them frames, since that seems to be when the animations shift
With < 20 Snap Reaction my Rookie DE is getting off the line at about "12 frames" in from the snap
He is pretty clearly part of the "last pack" of players to hit their checks
The earliest I see is an OL move at about "8.5-9 frames" in, which can't be more than 30~ snap reaction
Even if doubling my snap reaction from 20 to 40 gave me twice the reaction time (it obviously doesn't) I'd be moving at about "6 frames" in, giving me about 3-4 frames of free movement before the OL at face comparison.
Try watching the line frame by frame on a snap. With 30 quickness/sprinting it takes me 3 or so frames to move half a yard from a standstill. That half a yard advantage does not seem like it is going to get you free past the blocker without an insane quickness/sprinting/snap advantage and an end around route
However, a Power Blitzer just wants the interaction to START so he can get as many chances as early as possible. You only need to move that half yard into the blocker in order to trigger the interaction. So if you can get that 3 frame advantage, enough to trigger a blocking interaction and attempt a Pancake before people start to really move - that could be worthwhile. Because if you can hit that pancake right around the time the rest of the OL is just starting their blocking assignments, you should pretty much steam the QB. If you started your block interaction late like everybody else, there is a chance a defender gets pancaked before you leaving a free blocker to pick you up, etc. If you have intimidation, conditioning, the other guy is tired, high pass rush power... could be valuable to have that edge.