The decrease is not linear. For instance, VCRs [1-3] are at 1, 2 and 3 now, while Wired [1-3] still cost 2, 3, and 5.
Side note on wired reflexes not going down in essence cost. Wired reflexes get you a lot less than they used to. In SR1-4 it was fairly easy to get a 3 action street sam at char gen(if you min-maxed in 1-3 you could get 4 without too much effort), but the normal had a hard time getting 2 actions. Now in SR5 3 action street sam is still doable, but 2 action normal without any ware is fairly common as well. Then they went to one attack per pass in SR5 which means the benefit of going multiple times has gone down as well. So wired is probably 2-3 times less powerful than it was in previous editions, and it still costs the same essence as before. Now I expect people who play street sams will still get it, not because it is awesome but because everything else they could do with that 3 essence just sucks even more.
Without seeing the maneuvers that the VCR reduces the threshold for it is hard to tell if it is worth its essence past the you need this to rig fucntion.