I don't quite follow your reasoning unless you are talking about Jeb 4-8 years from now, if so I really believe that it would flop, due to the public becoming absolutely sick of the Bush/Clinton dynasty.
I didn't agree with the author of this piece at all that GWB might actually do something with any info that he may be privy to because as you pointed out, he has had countless chances to do so and has to date not only done nothing but seems to have quashed anybody elses efforts to do anything.
The way that both Bushes have buddied up to the likes of Clinton and Ted Kennedy absolutely turns my stomach. Both Kennedy and the Clintons are contemptable.
You may recall what the public thought about the Clintons following the theft of white house silverware, pardongate, etc. Now look who is the front runner for the white house. Jeb is going to look awfully good after 4-8 years of her.