Originally posted by jdbolick
Vision used to be important back when a quick reaction on the snap could mean getting by an OT untouched, but that hasn't been possible for some time now. Right now I don't see much reason to invest heavily in vision. According to timthorn's old study, going from 55 vision to 70 vision gives you roughly the same benefit as adding 15 in the Jump the Snap VA. I guess you could argue that getting a quick jump might help you get a better angle on the OT, but not getting a quick jump can actually mean the OT drops farther back towards the quarterback and thus the block is engaged closer to him.
The basic plan for any DE involves going balls out in strength, speed, and agility. Then you can accent the build however you want with the remaining skill points, choosing tackling if you want a run defender / fumble forcer, jumping if you want to deflect passes, or vision if you want someone who reacts very quickly. If it was even remotely likely that a DE would recognize a screen then I would recommend vision, but even with high vision that happened about as often as Look Off or Hurdle. So I guess I'm recommending 60 vision, but you can go higher if there's nothing else you want to invest in.
All true, but you forgot vision's roll in reacting to the run.