This is a great idea. I was kind of hoping though that they would keep "some" of the machines as-is and add a shared section.
I know a lot of people are complaining about how they spend several hours/days on a machine and someone might come along and win it in 5mins. But this isn't a solution to that case. That same person could be sitting there for several hours/days feeding into the shared jackpot and someone could still sit down on the machine next to them and win the entire thing in the first 5-10mins of playing. People will still get upset regardless of how it's done.
This is a solution however to people fighting over one machine and that's why I'm looking forward to it. I like the idea of multiple machines competing to the same progressive jackpot. I do hope though that the "Progressive Jackpot" is a lot higher when it resets. Maybe have it start out at 100,000 credits. Thumbs up!