Having a solid all around squad should not be stopping you from seeking a great QB. Ironically, giving huge contract to a QB that is not worth it, might actually make building a great all around roster long-term much harder. We are lucky right now that we are getting all-pro type of performances from players on rookie contracts, but this is not something you should rely on in the long-term, because soon enough those will need to be paid and if you give Brissett 30M+ this will make it hard to fill in the voids.
Our situation cap-wise right now is NOT the norm. Good rosters sooner or later have to get paid and the money will dry out so you will have to choose where to be strong and where you are going to go into the bargain bin. This is the whole point of having to decide whether Jacoby is worth the money or not. We should have no problem paying huge money to a franchise QB. We should have huge problem paying big money to a player that's in the non-franchise QB category.
Having seen all of Jacoby's games with us and a few of Jimmy G's, its easy to spot the talent difference. I have never seen Jacoby play out of his game manager role. He always did just enough to not be a liability. Imo, he has never shown to be able to take over a game when the running game or defense lays an egg. Ever. Jimmy G, last year after he was traded (haven't watched him this year) played really well. Even if his stats didn't show it, he played like a guy who can make all the throws and win despite the team around him not playing its best at times. That's why they awarded him a fat contract.
I honestly can't see Jacoby being more than a solid game manager.
Emmitt is the best RB of all-time, he played with one arm at NY with HFA on the line and dominated, won the game by himself basically. He is the all-time leading rusher and has more TD's than any other RB. He won 3 SB's too. To me that = best ever.