This is one thing I noticed a lot from 4e games I ran, or played in. There was very little need for house rules to "fix" system issues. The system was pretty solid at its core and worked as designed. It actually made the game more stable whenever we played. Any of the house rules we ended up implementing fell more into the extend the game design space rather than the fix the game design space.
spot on!
I thought not much people feel the same.
There is actually lesser need for house rules as you play further.