Not any major changes, no! Even though they ended up seeing some awkward memories, Lightning and Itachi did a good job not changing anything on their trip through heart!Aather! However, the conversation Roxas had with forest NPC had the effect of making Battler more interested in being there for other Emeralds and listening to their troubles should they need it.

Did the heart game change how Itachi views Battler? If not, what would he have thought of the parts of the heart he didn't see, such as the chapel full of corpses?