Ugh. I really don't want JEB to be the nominee. Really really don't. Still got my money on Kasich but you are right to a degree. If this pressure is real and it does happen, it will be almost impossible for a lot of these candidates to make headway unless there is an x factor that happens.
But, in a historical sense, if Jeb does run and he wins.... the Bush family overtakes the Kennedy's as our royalty from a political standpoint.
Prescott Bush was a Senator
Prescott Bush Jr. was a politco though not elected anywhere
George HW Bush, Vice President, President, Congressman, Director of the CIA, and held some other appointments and was an abassador once I think.
Barbara Bush is from the Pierce family who can trace its roots in a straight line to President Franklin Pierce before the Civil War
George W Bush was a governor and President
Jeb was a governor and then a President under the hypo
Jeb's son George just got elected to his first statewide office in Texas and will rising in the ranks over the years and is probably on a Senator track
And there are a crap ton of CEO's higher ups and bigwigs to use ridiculous jargon for the family. Counting the Pierce bloodline that runs to GWB and Jeb, you will have 4 Presidents, a Vice President, 2 Governors, a House member, Director of the CIA, ambassadors, state level guys and a myriad of powerful elites.
The Kennedy's had/have:
Joe was a massively powerful businessman
John was a Senator and President
Teddy was a Senator and presidential contender
Robert was a presidential contender and Attorney General as well as a Senator
Patrick Kennedy was in Congress for a long time
Kathleen Kennedy was a LT. Gov.
Joseph Kennedy was in Congress for a decade
And there are other state level offices throughout the family and obviously massively powerful business people. You can even throw in the Terminator and his term as Governor of California if you want as part of their tree. They only had 1 President, but several Senators, federal officers, congressmen, state level people, Governor and the business community.
The Kennedy's have been our default royal family for a long time. There was a Kennedy serving in our government for something like 70 years straight until Patrick left Congress. Just a massively powerful family. But the Bush family while maybe holding a fewer number of elected offices have held more "bigger offices". You could make the case now that the Bush family is the equal of the Kennedy family but if Jeb were to be elected, then there is no doubt.
As an aside the Adams' lineage isn't nothing either. John was our greatest diplomat, Vice President and President, his son John Quincy was President, diplomat, Senator and congressman (and might just be the most underrated important figure in our early history) Samuel Adams was a cousin and leader of the revolution and served in various offices in colonial times. Not too shabby overall. Of course, you can do the 3rd counsin 5 times removed tree report and find out that John Adams shares a blood line with William Howard Taft, Calvin Coolidge, Millard Fillmore, Winston Churchill, Marylin Monroe, several monarchs and some of the greatest writers in world history. But you can do that with any powerful family that traces it roots to colonial times given the nature of the world then. Still, if you want to debate the merits of our default royal families, you have Kennedy, Bush and Adams when it comes to politics. Jeb could be a really interesting addition to the Bush line.