Tactics only really matter if your power level is close to but a bit lower than the enemy's, but with prestige you hit a wall where the enemy is way stronger, then after getting back there it's trivial. It doesn't make the game more interesting. I agree that a system with a similar place to it would be a good thing (maybe something less extreme but weaker than prestige, with weaker enemy level scaling as well? Training? Retraining? Challenges?)
