So many easily missed rules - I played a good chunk of 8th ed games with my Lizardmen before I knew I could march and shoot with skirmishers, and my friend had been "moving into combat" for a few months until we finally looked it up and found the 1" apart rule.
The skirmishers moving around units is definitely not carried over into 7th. One of the things I miss sometimes is with magic, once you fail to cast a spell, your phase is over and I always forget.