I am grateful that you have brought this important topic up @econoar!
Even though we are clearly dealing with an nascent and abnormal economy, I believe that staking incentives is partly in the realm of macro-economics. As such, I believe that people with academic research and actual experience in these matters should be brought in to comment (of course after being thoroughly educated in crypto-economics). Experience can even be in game-world economies.
This is a related discussion on the topic of ether supply rate / miner rewards in the current Ethereum mainnet, ahead of a decision made by the All Core Devs:
Possible outcomes from altering the ether supply growth rate