There's a whole lot of questions I don't feel like answering one by one. So I'll just give you a summarized answer. With each perk there is a trade off. For example, choosing Thatonaught for Voidwalker makes it so you don't need Voidfang Vestments but only if your super is full. Also, you would be missing out on perks like Angry Magic. There are many scenarios where you would use Voidfang Vestments because your super is used often or charges slow. Sentry Turret for Stormcallers could be destroyed by others. How much damage and health does it have? A balanced amount. Please take this list with a grain of salt and think of your own ways to balance these perks. I literally hit 2000/2000 characters so I had no room to explain my reasoning or give full detail descriptions of each perk.