may never get balance in the force

This seems to be an "impatient—player—with—insufficiently—developed—roster—and—insufficient—knowledge—about—characters—and—their—counters" problem and not a game design problem as claimed.

Furthermore:
The developers are not aiming to create perfect balance among all toons. The strategy / bussiness model relies on power creep, yet with a counter to every toon. They follow that strategy quite well.