The 710 trigger mechanism is very similar to that of the 700, and yes, you can do some work to make it better.
I personally adjusted the trigger to break at 3 lbs and removed all creep and overtravel.

I removed the original 3x9 Burris and replaced it with a Tasco 6x24 Varminter for more precise viewing. Worked out great until I took a spill and my rifle went flying out in front of me slamming unto some dead trees. The stocks forearm took the brunt of the hit with it spinning a couple of times before the scopes eyebell took a hit and that was it.
The stock had no visible damage other than a small scratch under the swivel stud where it had taken the hit.
After some time of searching, reviewing and reading technical stuff, I settled for the Barska 6x24 Swat Tactical scope and am very happy with it. Hasn't lost its center once.

I did do a couple of barrel modifications that I think is important to mention.
The breach side is not entirely deburred and has a sharp edge that tended to shave a bit off the bullet as it entered and sometimes had the case wedge at the neck asI pushed the bolt forward. I useda Dremmel Tool extension and some grinding stones to remove the sharp edge and polished the edge where the ammo made contact. Someone had noted that any modifications like this might tend to make the shell casing deform because of the pressures caused by firing, however, because the the sharp edge is prior to the locking lugs and the bolt locks into the barrel, this area never sees any pressure and therefore is safe to fire without any safety concerns.
The second modification was at the muzzle end, I installed a muzzle break to ease the pain off my shoulder due to the fact I usually burn four or more boxes of ammo when I go target shooting and also to keep the Tasco Varminter from slamming into my face due to the short eye reliefe it had prior to replacing it.