If I'm given the permission by Staoshi Nakamoto to innovate or change something in bitcoin. Here are the two things I'll do and the reason why I'll do them.
1. I'll increase the Bitcoin supply to be pegged at possibly 30million and the date for the last mining will still be 2140.
The reason is simple. I feel the supply of Bitcoin at pegged 21m will be too limited for the global economy.
2. Adjusting the Bitcoin Halving. The Bitcoin Halving is currently in every four years were the reward of miners is halved. I'll now adjust make it every 8years.
That means after 2020 halving the next one will be in 2028.
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The reason is this. The Bitcoin blockchain is working and running effectively because miners are working to maintain the ledger. Therefore, I want their reward to be sustained for a long time before the era of payment of transaction fee.
You don't need permission. Just fork the repo. Make your changes. Start mining the new block chain. I recommend that you call it something other than "Bitcoin", though.
1. Why? Can you explain why you think that 2100000000000000 satoshis is limiting, and why changing it to 3000000000000000 satoshis is so much better?
2. In the long run, the amount that any individual miner earns depends more on their operational efficiency than the size of the block reward. That may seem counter-intuitive, but that's how the economics of mining work. If anything, the halvings should be more frequent so that they are less of a shock on the economy.