These are some things the Set team has also talked about.
Some of the concerns you raised are addressed in IIP-2 which adds IIP requirements for Index proposals.
But I think largely we agree that even more rigor could be applied to Index applications since they are, like you say, so impactful and difficult to reverse.
Here are some other things to consider for Index proposals:
- What is the go to market strategy?
- What distribution channels can the index author commit?