Chaos Galaxy: Commanders Skills

Each time when commander promoted, player may choose one new skill for him from 3 randomly selected skills from the list below. Starting rank of any commander is 1, maximum rank – 10. Thus each commander may obtain no more than 9 new skills in total during each gameplay. Each skill cannot be acquired by each commander more than once.
This game mechanic is frustrating and can be abused by simple save and reload, because every time 3 skills to choose during the promotion are randomly selected without any dependencies, and thus will be different each time.