Some people are slightly screwed if they use first turn charges most. Infiltrating scouts being a possible work around (especially CCW ones). BA are definitely geared for first turn charges but I think 2nd/3rd turn charges are what everyone has to play now. Expect a lot of death company returning in force (3x squads of 15) for their ability to get an extra movement before the start of battle. With a CP boost for detachments, I see this being very popular.
If I opt out of reinforcements (I.E. play all units on the table), all my assault units are essentially free to be focused down by everything else. So basically a slight return to 7th in some regards.