I'll be honest, from a selfish point of view I'd be quite happy to see the big sign up bonuses die or at least get clamped down. They were always distorting the market and they created a lot of competition for premium seats - I'd be happy to see them go.
If that happened and it managed to take down some of the bloggers as well, I wouldn't shed a tear. Don't think many of them add much value to the conversation these days.