TFA: "They worry that this microsecond-scale competition between algorithms is socially wasteful"

I would LOVE to see a stock market that

(a) time-penalizes large orders -- 1 share trades in a microsecond, 10000 shares takes a week to execute

OR

(b) adds a random time delay to all orders in the range of [0,60] minutes for corporations, [0,10] minutes for residential traders, and [0,1] minutes for people who have provably low income

This will restore opportunities to real humans and drastically reduce the advantages that institutions and robots have.