"My Idea:
"Reduce from 30 to only 5 votes the maximum amount each profile can cast."

I agree!

"Increase the Security Council size from 20 to 50 witnesses. It might make it a little harder to get a Hard Fork, but it's not impossible."

I agree!

"Set an expiration for casted votes."

Absolutely!

"Votes expire in a year or even 6 months."

Absolutely! I think 1 year would be good, as I indicated in my prior post.

"Votes can be renewed before expiration causing the expiration clock to reset."

Agreed! That way votes from past (or no longer active) members would automatically expire on their anniversary as they should.

"Proxy-delegations will not expire."

I'm not sure about that one! I'm not much in favor of anything that does not expire at some point. That reminds me too much of Supreme Court Justices who hold their positions for life, no matter how bad they become.