I don't know of any .357 snubbie that's fun to shoot when using the big rounds. That being said, my LCR has a Hogue grip that (for me at least) takes much of the sting out of shooting the gun. I really, really like Hogues and have them on several of my firearms.
As far as the sights go, I agree that the stock sights weren't much good but one should remember that the LCR is a pocket gun and the sights are small and low-profile for a reason. This is a weapon designed to be used at very close range. I replaced the front sight with an XS Big Dot (from Trijicon) and now find it much easier to visually pick up the front sight when shooting rapid-fire. As a result my shot speed and accuracy with the pistol has increased by a good margin.
(Insert random tough-guy quote here)
"See my gun?? Aren't you impressed?" - Anonymous sheepdog
Guns - the alternative to running for your life.