Some ideas to prevent another Coup d'etat or Civil War

Just clarifying the terms I used in the title to describe our current situation:

• Coup d'etat: a hostile takeover of the network like Sun Yuchen_{(Justin's real name)} did in the first day by filling the whole Security Council_{(How I call the Top 20 witnesses)} with his minion-witnesses;

• Civil War: the current state of Steem where two parties fight for control of a Blockchain that supposed to be secure against centralizing authorities. One side has 20 minion-witnesses servicing a single entity while the other is a coalition of almost everybody else.

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I posted about this same subject before but here I think those ideas can have larger impact as I want to see people discussing them and developers to consider them when preparing the next HF.

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The Proposals:

Vote Dilution

• The idea is to divide the value of a witness vote by the amount of voted witnesses.
  • If you have 20 SP and vote for one witness, it's a 20 SP for it.
  • If you vote for 5 witnesses, it's a 4 SP vote for each.
  • If you vote for 20 witnesses, each gets a 1 SP vote.
• With such mechanism in place, a new takeover attempt would be as hard as accumulating 20 times more SP than the whole Steem community.
• The more witnesses you vote, less value your vote has to each of them.
• A giant whale like @steemit would be able to put one or two witnesses in the Security Council, but with each witness the difficulty to insert the next increases exponentially.
  

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Vote Expiration

• The idea is to make votes for witnesses expire after a while.
  • The idea is to prevent dead accounts from influencing Steem Governance^TM.
  • Votes are automatically uncasted after a year.
    • Can be 6 months, 54 weeks, whatever time developers think is more adequate.
  • Votes can be renewed before expiration, resetting the expiration clock.
    • Vote renewal before expiration shows the user is still active.
  • Proxy setup does not expire.
    • Good for cold storages.
    • But every proxy-chain must have an active user at the end of it, because his votes will still expire when not renewed.

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Chronological Protection

^{Personally I don think this is important, but no harm in sharing an idea.}

• The idea is to prevent another hostile Blitzkrieg from happening to Steem.
  • All SP influencing the account, acquired by either Power Up of Delegation should have a 2.5-day gap before beginning to affect Witness vote positively;
  • Power-down, undelegation or uncasted votes have immediate effect on witnesses.
  • In case of Vote Expiration proposal above being implemented, vote renewal shall suffer no effect from Chronological Protection. Only votes casted or when they are recasted after expiration.

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I am sorry if I made any grammar mistake. English is not my first language.
Sorry if I also said anything that might sound stupid above. It was not my intention.

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Thank you all for your attention