Re: Defensive Gurus.... I need some help
I can't exactly picture what you're saying, but the easy answer for why LB's would be farther or closer to the line is to either get up onto the LOS very quickly or to have more room to to see what's going on and make their move accordingly.
But it's not all on coaches. Some players feel more comfortable at certain depths...If a coach sees something like a player having trouble getting off blocks or not being able to see they might suggest he move back some.
It just depends on what a player is trying to do...