Too many OL.
Assuming Blythe is not resigned, and neither Allen nor Demby have a future with the Rams that still leaves nine OL under contract.
There’s Whitworth, Havenstein, Noteboom, Evans, Edwards, Corbett, Shelton, Anchrum and Brewer.
You’re suggesting adding four more OL to that group (Martin in Free Agency, plus three draft choices).
That’s 13.
Teams usually carry 8-10 OL on their 53; and often have just seven active on game-day, with another 2-3 on the Practice Squad.
You assume that the coaching staff believes all of the remaining Ram Oliners to be good or future starters. Maybe they don't. Maybe that's what Jordan was alluding too. Its possible that was part of why they moved on from Kromer and brought in Carberry. Maybe they felt Kromer's talent evaluations were lacking. Jourdan mentioned 'Kromer guys'. Maybe she expects them to move on from them? Carberry not only knows what McVay wants but he's fresh from college and should have a leg up on knowing available talent, that he coached and watched during college games and watching film. Fresh start?
Consider a stopgap veteran center, be it Blythe or Martin or whomever. Then a future center in the draft, one guard, one OT to replace Rob or Andrew.
Maybe Jourdan is speculating too. One guy Snead brought up and seemed excited about was Brewer. The other was Anchrum. Some of that could be smoke but we all saw Brewer look pretty good, better than Noteboom imo. If Noteboom is the future OLT why doesn't Snead or McVay come out and say it? He's already on the roster. Its not like they would need to hide it.
Maybe they are hoping to revamp the Online in the next two years when a few more of these guys are free agents. Many, not all, rookie Onlinemen need some time to develop. So if they wait until starters, like maybe Corbett or Edwards or Havenstein move on, in free agency are they going to sign free agents to replace them all, or do they want young guys ready to step up? (and don't see most of the backups on the roster as capable)
This draft is supposedly pretty deep with interior Online men. That's not usually the case. It would be a good time for a team that doesn't have any first round picks to capitalize on it.