Ok I understand the average thingy, its weighted based on the rshares of the comment so yeah it will work. Did you think about the issues of people buying votes on steem? Theres a public list of the biggest bidbots, and you should clearly not count their votes in your ranking algorithm, you don't want a bad crypto project being 'promoted' on your website because they bought votes on steem.
I have absolutely nothing against the 'creators' of a token keeping a large % of the supply for them, especially if this % lowers with time. I believe it's a good model, as you will have good incentive to keep working on your token and product to make your own tokens worth more. Also it makes sense that you need to keep a certain degree of control while things are unstable and you reach a good ranking algorithm, it's hard to tell how things will behave for chaotic system like steem currently. Alike steem, you should also be clear with your community about how and when and how much of your tokens you will sell every quarter or year on the markets so that if people want to invest in your token, they know what they are getting into.