There's a web app that illustrates how this could be wrong: https://www.btcsecuritybudget.com/
You can change failure/success thresholds in the settings, but you can get the idea pretty quickly just playing with the sliders.
That's not to say inflation or tail emission is a good idea either, but I think more people ought to be taking this seriously as its potentially an issue coming sooner than later.
Also:
  • long conf times are bad for UX.
  • high security is one of the biggest selling points of btc (helps with censorship resistance). If eth surpasses BTC in security, then why wouldn't people just move to eth?
  • high fees are a negative because that turns the base layer into something closer to banking than what we have today.