The Russ/PC combo never dips below 9 wins, even in seasons when seemingly everything goes wrong. So that is a nice 'bird in the hand' to enter any season with.
If you do not have an elite QB, which the Rams and 49ers do not, you really need to seize the moment when you catch lightning in a bottle for a season or two - which the 49ers and Rams almost pulled off. But this league has shown that long-term sustainable success is not attainable without an elite qb. And if a big part of how you've won is off the strength of your play calling and design for a non-elite qb, eventually defenses start to counter better.
Kyler is the one who is really going to come on and be a problem.