Interesting question. Personally, I don't think that neural training would specifically help with hypertrophy training, except in a general sense, which I'll explain.
You can train neural pathways to the point where they approach the speed of a reflex. I'd have to dig up the studies, but they tested reflex transmission time against transmission times for martial artists doing various activities. You can get very close with highly trained individuals doing repetitive tasks. But, a faster transmission speed won't really facilitate hypertrophy, as it isn't causing a higher amount of stress to the muscle tissues, they are just a nanosecond or two quicker in responding.
Muscle memory {hereafter MM} (which is a bit of a misnomer, since it's not stored in the muscle) is probably a better fit, but is somewhat independent of neural transmission as far as speed is concerned. Muscle memory is attained through many many repetitions of a task (Such as reaching for a doorknob. You can find a doorknob in the dark because almost all US doorknobs are a standard height.)
Where MM would facilitate hypertrophy in my opinion is in better execution of a task. A neophyte in the gym is going to wobble around, their bench press won't groove in the same "track" so to speak for each rep, things like that. That takes away from the quality of the work being done, and you get less out of the workout. As your muscle memory grows, you get more out of the work being done.
What I completely don't know is if neural improvement would lead to better recruitment in the fibers, my blind guess would be probably not, as IIRC recruitment is a function of the type of exercise, but it would be an interesting avenue to explore.
