Is this a massive troll job?
No it would lead to mass confusion, continually missed assignments, not playing to each players strengths.
I want my O Lineman to know who is next to them at all times, know what to expect from them and know their assignment with as little "thinking" as possible. Can you imagine going from tackle one play to guard the next, in the middle of the play you forget you switched position? Do i pick up the blitzer, what gap do i cover, who picks up the stunt, will i have help on this play or do i need to help?
It would be utter chaos.