[1.2.276] More rebalancing

500 m.att pots would be ridiculous for a number of reasons.

500 is a rather tame number -- 750 would be a more realistic number to compare to the damage boost that high weapon att classes get -- more for lower watt classes

I honestly completely forgot about the balancing of the mages. If this is the last change I am really disappointed. A 10% addition to amp is laughable.