Apparently certain % is of Steem Inflation is dedicated to Miners, however Mining cue was dominated by handful of Miners. Proof of Work provide little security benefits for Steemit, so developers are most likely to allocate more Steem Inflation to Witnesses or the Network and remove Steem Reward for Mining.

As for normalized payouts, I personally don't understand much about it in order to give your a more detail explanation!

Well, we don't really have much Statistics for Over 4 Posting a day limit, so it difficult to determine whether this rule actually helped reduce or prevent Spam, don't think this will much of an impact but just make things more simple

Give me your Steemit.chat name, it would really help if you could proof-read some content since it's importnant information about Steemit that needs to be as clear as possible!

P.S. I made some adjustment to the Infographics, hope it's good!
Appreciate the support :)