I believe you have gotten this reaction because much of what you suggest actually changes the base design of DPOS. If stake weighed voting is not what you want (and I have my own issues with it at times), then dpos perhaps is not for you. And I don’t mean that negatively.. it’s just some of these things are basis of the whole design itself.

As far as witness vote expiration, how to avoid issues with exchanges voting in the future etc.. I feel all these things have been openly debated and may be experimented with in the future.

This situation isn’t just about a large stake holder though, as you imply.. it’s about a fund that was established in ways that gave them an advantage and all of this was “accepted” based on the idea that it was done in place of an ico as a way to find development for the Steem blockchain. Therefore it’s very different imo