The Rams have plenty of issues, no question. The RB situation, getting Robinson involved, the OL, lack of pass rush, inconsistent special teams, etc.
But these guys coming back can only help. No one can say getting Allen back at center vs. Kolone won't help. Same with Jefferson, who might be a key to freeing up Robinson more and getting Kupp deeper into the secondary too.
The defense has easily been the best part of the team and Kendrick has held his won. But having their full complement of CBs again is a big plus too.