I'm testing the IA files. Some changes have to be done to keep the unmodded game compatibility (no double wall formation, and no Long weapons range tactic for ships...)
Long Weapons Range strategy shouldn't be a problem for the unmodded game, it is defined in the Orks_AI_Strategies file (and should be in the empire files too), so that should work fine. Forgot about the double wall not being in the unmodded game.