Actually that wouldn't be wise at all.
Firstly, Brady's not the GM in Tampa Bay so the global construction of the team isn't his call. Sure he can bring in Gronk and AB, which will help him in the passing game but he has nothing to do with the roster building on the defensive side of the ball.
Secondly, Brady probably doesn't have enough seasons left to wait for Tampa Bay's defense to become "elite." Their secondary sucks.
Thirdly, and most importantly, BRADY DOESN'T NEED TO BE PROTECTED WITH BY A DEFENSE OR RUNNING GAME.
This drives me crazy... did people watch Brady play this season? Once he had a full compliment of skill position players and he had settled into the Bucs offense, he was red hot in December... 3-0, 72% completions, 311 Y/G, 8 TD's, 0 INT's, 131 QB rating. Then he shredded a WFT defense that ranked 2nd in passing and overall defense for the season. Hello! Brady's still elite, he's still a killer in the postseason.
It's the same damn mistake 'the genius' Belichick made, starting prior to the 2014 season when he commented on Brady's age as though he was anticipating an imminent decline in Brady's play. It never happened. Only the team around Brady declined thanks to Belichick's many whiffs as a GM. And the argument that well no other quarterback has been able to do what Brady's doing doesn't fly. If Belichick's a genius, especially with the firsthand exposure to Brady, then he should have been able to effectively measure Brady's capacity to go on playing at an elite level. He egregiously miscalculated. As well some fans continue to do the same. Brady just needed a representative offense around him which Tampa Bay has given him. A stout defense obviously would be helpful but Brady doesn't need that for protection. Jones is a good RB and he had a good season (Fournette maybe not so much), but Brady had enough of the run-first approach last season when he was handing off to Michel for 3.7 per carry.
Also, the Peyton Manning comp is ridiculous. Manning was totally spent in his last season and his play/numbers reflected it (9 TD's & 17 INT's... that's worse than Cam!). The Broncos did him a huge favor by reinstating him as the starter... he was easily outplayed by Osweiler but Elway & Co. wanted to give Manning a chance to go out a winner. It only worked thanks to Belichick gagging away weeks 16 & 17 which made the Broncos the #1 seed. Had the Patriots held onto the #1 seed like they should have then Manning's last game would have been another beatdown in Foxboro. Instead the Broncos defense (coupled with a Cam no-show) carried Manning to that second ring that he desperately needed to cement his legacy (even though he was brutally bad in the Super Bowl).
As for Elway and Denver, unless Tampa Bay is trading for Derrick Henry, they're not getting anywhere close to the production of Terrell Davis from 1997 & 1998.