This is pure speculation, but I think there's something to it:
I think GB 2.0 as a group is going to die prematurely.
Pierce died at 79 - that is about 20 years early for a GB member.
It seems like most of the members of GB 1.0 lived well into their 80's and 90's
Here's where I see a difference:
GB 1.0 were all skinny guys (mostly). They looked like they might eat a half-can of tuna fish in water a day.
GB 2.0 do not look like they miss too many meals. Morris looks downright obese, Jackson too. Even Sanderson has a lot of weight on him, especially for a forty-something guy. While I wouldn't have pegged Pierce as "obese" he certainly did not have the wiry profile of Franz or the other old-timers.
Sure, their lives overlap with 1.0, but that may not give them as much of a "stretch" as they intended unless they start taking their health seriously.
Fat cats.