Completely agree, I would have also proposed 250/500$, if only decent and intelligent proposals are made, no one should be afraid of the initial deposit.
Raising the deposit price will be tantamount to having clean governance.
It depends on which country you live in. 100 dollars is little or a lot. There are brilliant people in all parts of the world. What would be the incentive? Why would someone have to deposit $100 when staking brings rewards?