Well I am certain to anger someone here but this is my two cents.
I have gone to several, 6 to be exact, gun smiths locally. One started out great and went down hill fast, sort of like hiring a house keeper, the rest were crap. There is nothing more frustrating and disappointing that getting a fine firearm, like your Springfield, back from a butcher. To add insult to injury you then have to pay them for ruining your beautiful gun. You can try to complain but all it yields are justifications and excuses.
My standards are high, I also have really expensive guns. Standard too high and guns too expensive to let some hack fiddle with them. The old saw says if you want it done right do it yourself.
I understand that doing it yourself isn't an option for most. I am sorry to say it but if it where my gun and I couldn't do the work myself I would live with it as it is; or send it back to Springfield and have their custom shop do it. Springfield's custom shop is one of the best in my opinion.
My experiences have been similar to Eukatae's. The only EXCELLENT quality I have seen was out of Barnes Bullets in Utah County when they did a muzzle brake. The quality was superb, but the trigger came back bent.
Weird, and they made no offer to repair.
The other gunsmith I have used was on State street in SLC and WAY overcharged for the services he performed.
I agree with Eukatae. Best bet is to send it back to Springfield with some red sharpie on the spots you want beveled. I wouldn't trust a local gunsmith to do that kind of artistic touch-up work.
On the other hand, a faster, probably cheaper method is to do it yourself. Of course this implies that you trust your own abilities, but you would be better able to get it just the way you want it. I have used a Dremel tool to round off some edges on one of my guns and it worked great, particularly on sharp edged triggers.
If it's stainless the Dremel works perfectly, just take off the edge and then buff it back to shiny perfection - stainless is super easy to work with, unlike blued or Parkerized metals which have to be retreated.
Just an idea. Oh, and I would call Springfield to get a quote before you send it in - Dremel kits are only $100 so it might be cheaper to do it yourself - and then you have a Dremel kit for future use.
OK, so I have a question about GS's... I've read in several places (my user's manual is one of them) that it's prudent to have a GS examine the gun every few years to make sure everything looks good and perform any tweaks/minor repairs that the average owner might not be aware of... what do you do then -- still send it in???
I would trust a local GS with minor tweaks/repairs. However, I am not your average gun owner (like the manual assumes most consumers are) - so I feel better performing maintenance myself and keeping the moolah in my own pockets. Besides, if I don't know how to do something, I look online and there is an opportunity to learn something new rather than shell out for someone else to do it for me.
I guess it comes down to what needs to be done and who you trust.