IMO Garoppolo hit the damn lottery going to SF to QB under Shanny. Few OCs set up their QBs to succeed as well as that dude. So yeah, I do think the future of the NFC West will have many battles between the Rams and 9ers.
All that aside, though, I thought all that before the 9ers traded for Jimmy G. Whoever Shanny got as QB would have been a threat to us in that offense, with the strongly balanced run game and surgical passing attack. So for myself no real change there, as next year my expectations are exactly what they were before the trade was made. If not Garoppolo it would have been Cousins or Smith, either of whom would have been great with Shanny.