First of all I'd learn from my mistakes. I'd make a point of being much less predictable (Of course, I myself would never have been that predictable in my play calling in the first place), and tell Greg Olson I need him to make sure I don't get into some kind of predictable rhythm with my play calling.
Getting Richie back, I'd run between the tackles to the right and run outside to the left with Miller's quickness until they show me they can stop it. Include screens. We don't do enough of that and we have players who have wiggle enough to gain yards for us.
In the passing game I'd trust my protection and mix in about 30-40% long balls. Fuck it, throw the fucking rock and see what happens.
On D it would be very simple. Stop the run and force Cousins to throw. This is a no-brainer, he just hasn't been good since he signed w the Vikes. I think our DBs can handle this guy, he's no Mahomes. I also think our pass rush can get to him. Stop the run and blitz on obvious pass downs.