Honestly combat/magic skills are an unnecessary time sink which just force you to spend hours upon hours hitting a cap just so that you can be at max potency with your class. Time is better spent producing content which challenges the player not content that forces you to grind on mobs to improve your skills, instead of combat/magic skill we have the materia system which can be seen as a combat/magic skill like setup but we have more control over when we gain the materia the only difference is more luck is involved in obtaining a materia you may want.