Whether he needs one isn't quite the same as whether or not he'd benefit from one. Brady had a veteran backup for his first four years as a starter. [Flutie and Testaverde were there to help Matt Cassel more than anything else.]
Brady was in a different position for the first two years of his career... he was the back up. He was not the anticipated starter, not even remotely... He was the fourth qb...
The idea of a veteran "mentor" is always bandied about... its a feel good story, you know? grizzled vet, at the end of his run, helps the poor baffled rookie figure it all out... Its the Hallmark movie of the week for men... You (the collective you, not singling you out personally) and I have a different perspective on the roster, and the role a veteran back up plays in that position... A veteran back up provides security in case of injury, ie depth... that's about it... Friesz, Huard, Flutie, Testaverde & Newton would be the list of vets we had brought in over the years... Newton was a bit different as far as his anticipated role... but they were all here to round out the roster... the rookies might pick up a thing or two, but really, eh, the role is more about depth than anything else... the team might need a guy who can step in at a moments notice so the wheels dont fall off in case of injury... I guess you could say there might be a benefit from that, but I'm dubious as to the amount of help it actually provides
Players are responsible for their own development... They are the ones who have to engage, to ask questions about things they don't get, who have to practice to get it right, to study film to understand what they are seeing, and if they can take the second step, understand & anticipate what they will see on the field...
For the life of me I cannot figure this out - what was the purpose of bringing Brisket in this year besides to take a pounding? the newb coaching staff put him in the line of fire to take a beating, okay, great... is that it? anyone could have done that... I do not see any benefit... ymmv