Because randomly giving out 50mil gold will change the game for the people who really need it??

Clearly you haven't thought this one through Matt.

The problem, not that I really see it as an issue is;

-Costs to upgrade items and talents is growing by exponential gains.
-Income gained from phil stone, banish are linear and in the case of the noble lady its flat (zero increase).
-While coins in the arena faired well while you leveled up, credits however forgot to continue on the 1/2 coin amounts. 266k large coin vs 8k large credit at 100 anyone??????????