In the latest version there are some randomly appearing neutral units (that aren't really neutral because your units will aggressively chase them). Sometimes a Brutalisk (WTF?) attacks your PF (and loses badly).
There are instances where this is quite game breaking. My army once spotted some neutral whatever and went out of the main path to chase it, and pretty much evaded the enemy army, resulting in a cannon kill. Sometimes ranged units lag behind because they spot a critter and stop to attack it, and things like that.
I believe critters should be neutral and not a target (if they are even necessary), and Brutalisks should just.. not be..
By the way, if there are Brutalisks in there, that means that now the campaign data is being used. Can it mean that campaign units are on their way? (Gollies and Firebats would be extremely helpful for Terrans)
I am somewhat adept at data-editing, and can offer my help if needed in implementing those units.