Overall, I think the running game is much improved.
I do not think broken / missed tackles are overdone. They need to be part of the game, just like they are in real life, in my opinion.
If you have a defensive player with a great Tackle rating going against an offensive player with a poor Break Tackle rating, then obviously there shouldn't be very many missed/broken tackles.
However, if the situation is reversed, there should be.
Also, it's good to see the offensive player "fall forward" when being tackled occasionally, instead of just stopping in his tracks when getting near a defender.