People keep asking for rules to be relaxed in various areas so that there can be much more diversity. But it will never be how they would like. The truth is that, even if there were diversity at the beginning, it would very quickly converge to the one that seems to work the best. There will never be multiple solutions that are all equally good. There will be one that is perceived to be better and every team that doesn't have it will adopt it very quickly.
Also it would be a colossal waste of money.