John Pagano is an assistant DC in Houston. Offer him a DC position in LA and Houston can't stand in his way. Give Wade a new title as defensive consultant. J
Fire Kromer and promote Jedd Fisch to OC to oversee the offensive side of the ball. McVay can still design the game plan and call the plays, but Jedd could take on the burden of making sure the plan is implemented. Hire Whitworth as o-line coach and fire Dickerson who has shown this year he can't coach worth a damn.
John Pagano would be an excellent addition if the Rams keep Wade Phillips, however, teams can block assistants from moving if they are under contract, that rule changed, the only thing they can't block them from is Head Coach, so the Texans could say no if the Rams asked permission.
Now as to firing Kromer, I would not want to go with a player that has never coached especially on the Offensive LIne. Now if you wanted to bring another OL Coach like Bill Callahan and pair him with Whit as Assistant OL Coach I could see that, but IMO, Whit does not seem like somebody who wants to coach right away, he's a family guy and coaching takes more of a commitment and you work all the time during the season and even now in the off season.