Is it possible to fix it so that raiders/outlaws(Storm's End)/Rhoynar bandits and slavers join in on battles?
Other bandit types like pirates, wildlings and so can join in when a group attacks you, but those I have mentioned apparently don't. That is nice when you are low level, but when you have ammased a warparty of 50-60 elite units it is quite a chore to slaughter 5-6 groups in a row when there could have been a proper battle.
I have also noticed that the forest bandits don't use their bows. Apart from these issues the different types of enemies are fun and pretty well varied. Would have liked to see more action in the Highgarden-Lannisport region though.