To throw a little history, to me the biggest thing I saw in 3e games was that no one ever seemed to play by the recommend point buy. In 3e, the standard point buy was 22 points, with 25 being high. My group almost always played 28-32...and I think that makes a difference in gameplay.
So far, I think higher level combats are not working as people initially expected. Facing a high level opponent in 4e is often winnable, but has large possibility for grind.
Skill Challenges seemed to be played differently in nearly every group. There are definitely the loosest mechanics in 4e, and people are still figuring out how to use them. Even though I designed my own system, I have been using SC less and less. There are certain things I love a SC for, but I have found especially for social situations...my players roleplay better when they are talking to me more and rolling less.
So far, I think higher level combats are not working as people initially expected. Facing a high level opponent in 4e is often winnable, but has large possibility for grind.
Skill Challenges seemed to be played differently in nearly every group. There are definitely the loosest mechanics in 4e, and people are still figuring out how to use them. Even though I designed my own system, I have been using SC less and less. There are certain things I love a SC for, but I have found especially for social situations...my players roleplay better when they are talking to me more and rolling less.