If you want it to be better suited to hunting and you're married to the gun, I would buy a Proof carbon barrel with a sendero profile, blueprint and true all the mating surfaces, at minimum bed the recoil lug, and replace the trigger. The barrel will lighten the gun up a fair amount, the recoil lug and blueprinting will square everything up and help with accuracy and consistency, and the trigger... well, their trigger is what started them down the road to multiple bankruptcies and liquidation. Just get rid of it and put in a timney and be done.
The down side is at the end of the day, between what the gun costs new ( +/- $1200), cost for the proof barrel, and the trigger alone (+/- $1k total), you've got more money dumped into the thing than it's worth. At $2200, you can buy a Springfield waypoint or another high end production rifle that will most likely shoot better and come with a better warranty than the Sendero does.
Bottom line, if you've just gotta hang onto the Remington, then yeah you can do some stuff. But if you're open to other ideas, I feel your money is better spent sinking into something else.