You can:
- play on expert with strategic settings set to easy level in ja2_options.ini - there will be less attacks. [Strategic Enemy AI Settings]
- disable reinforcements (ALLOW_REINFORCEMENTS = FALSE) - enemy will have to attack one squad at a time. if I remember correctly it's still possible to use militia from adjacent sectors for autoresolve even with disabled reinforcements
- make militia stronger in [Militia Strength Settings]
- keep MAX_STRATEGIC_ENEMY_GROUP_SIZE = 20
- increase MAX_MILITIA_PER_SECTOR
- use mobile militia to keep key sectors like roadblocks
- allow training of veteran militia - they are much better. ALLOW_TRAINING_ELITE_MILITIA = TRUE
Increase subpoints x2, I think it will be enough as there will be less battles with mercs
; Attributes
HEALTH_SUBPOINTS_TO_IMPROVE = 50
STRENGTH_SUBPOINTS_TO_IMPROVE = 50
WISDOM_SUBPOINTS_TO_IMPROVE = 50
DEXTERITY_SUBPOINTS_TO_IMPROVE = 50
AGILITY_SUBPOINTS_TO_IMPROVE = 50
; Skills
MARKSMANSHIP_SUBPOINTS_TO_IMPROVE = 25
MECHANICAL_SUBPOINTS_TO_IMPROVE = 25
EXPLOSIVES_SUBPOINTS_TO_IMPROVE = 25
MEDICAL_SUBPOINTS_TO_IMPROVE = 25
LEADERSHIP_SUBPOINTS_TO_IMPROVE = 25
; Experience
LEVEL_SUBPOINTS_TO_IMPROVE = 350