A lot of teams have won with that formula. When Russell Wilson won a SB he wasn't great, he was just good back in 2013 but they had a great O.Line that season. Nick Foles has always been average in reality and he won with that formula as well, Eagles had a great O.Line in 2017. Joe Flacco also did in 2012 so did Eli in 2007 and 2011.
Although not recently, the Redskins won 3 SB's in 10 seasons with their O.Line being the strongest part of their team. They won with 3 different QB's and none of them are Hall of Famers = Theismann, Williams, and Rypien.
Yes you need at least a good QB to win, I have always said that but with a great O.Line and a good QB, sure you can win a SB. Of course it would be fabulous to have Peyton Manning as your QB and just a good O.Line but that is rare having a Peyton type lol.
It doesn't really matter where you allocate your cap resources as long as you're paying guys who aren't going to put their feet up once they get paid.
And the reason this will always be true is because each roster's end strength can still be fine even with money unevenly distributed. You either have a good roster or you don't. And the Colts, fortunately, have a very good roster so I could care less where the money is piled.
For this season my only concern with the OL is Fisher holding up and living up to expectations. After the draft that concern was a lot stronger than it is now. Now I feel much better but if Fisher misses time or otherwise doesn't play well Wentz will be the guy who suffers.
Lastly paying two guys on an OL is not crazy either. I'm fine with that in and of itself.
Ballard has taken his shots at drafting defensive backs; Hooker, Wilson, Rock, Willis, Blackmon to name a few. Some have worked out. That said I like the idea of adding a veteran FA or two as aces in the hole in case things go astray with our younger players. Rhodes and Carrie are good examples. I actually wouldn't mind adding another veteran like Breeland for example. Another proven vet who can hold the fort if necessary. Especially this year as we make a SB run. 17 games is a long season.
I think Fisher was signed with the intention of keeping him well beyond 2021. Ballard will pay and extend the players he wants to keep. I don't worry about such things as spending too much on the OL. That's Ballard's job. I have confidence he knows what he is doing. Too many variables can change the best of plans. I don't get hung up on keeping players until they retire. Very few players are able to do that. As a fan I am just hoping for success and a chance at at SB very year.