No2DC brings up a good point, that is especially relevant, IMO.
I think the main crux of the discussion in this thread revolves around your statement. I think most of us like the idea of DC4 in black & gold....but at the right price. NO ONE wants the Kirk Cousins situation you described. And most of us think (hope?!) this will be DAs last season as HC. IF that comes to fruition, we don't want our Saints to be tethered to a Cousins-like situation....position could use an upgrade, but salary prevents the upgrade from happening. That is the WORST position to be in. It's one thing for a player to bust, and you move on. It's another thing when the player busts, but you have to keep him because you can't afford to cut him. There's an opportunity to improve with the former; you're stuck in purgatory with the latter.