Regarding 1 vote over 100s , I agree it is not fair, but this is how the system works now. Yesterday I addressed this issue in my comment in this article https://steemit.com/roadmap2018/@steemitblog/steemit-roadmap-2018-community-input-requested#@hoodaim/re-steemitblog-steemit-roadmap-2018-community-input-requested-20171117t205926649z
My personal opinion is that money that are given to author should be one thing, reputation should totally changed and have more impact so the vote of minnows without money would be worth something.
However, we have what we have now and can only propose new solutions.
P.S. I have not seen many cases where 1 whale downvoted 100s of votes, usually it was the case where 1 whale downvotes another whale and actually those small votes stay at place.