From that point of view, I wouldn't mind the arguably over-powered abilities being rare and expensive. It would make things more interesting.
This is largely why most of the abilities we currently have should be altered.
Right now the game feels entirely too "bombastic" and it gets tiresome in the long run.
There's no sense of progres when you unlock new abilities, because many of the basic ones are not only very powerful visually, but also functionally.
Then there's skills like Ignite or Contaminate, that have such ridiculous AoE that their power will often end up working against you.
