very interesting discussion !
Of course nobody knows how this will turn out.
But i think the current system can work.
Even if I wouldn't reject some changes it wouldn't feel good for curators to only be able to distribute penalties. (in any case for me)
But It could be wise to modify the voting system to motivate big curators to act as kind of guardians.
I would like to see more delegating processes to enable a better powerdistribution in a different layer.

With great power comes great responsibility...
the people with great power are very likely to have good intentions for steemit...