Hamilton's two-year contract extension is worth up to £80 million, making him the best-paid driver on the grid, while Bottas's deal is for one year with the option of an extension to 2020.
In Formula 1's drive to attract newer and younger audiences, Hamilton's rockstar image, legion of fans and social media obsession are important ingredients.
All told the ebb and flow of the 2018 season seems to change with every race, and while Vettel now leads Hamilton again, things could change this weekend.
Mercedes executive director Wolff was thrilled to end the protracted negotiations and announce Hamilton's extension.
"I think we are still missing a little bit in terms of one-lap performance", he admitted.
Formula 1's future after the 2020 season is now being discussed by the sport's key stakeholders - the teams, FIA and FOM (Liberty Media). Even if it is not right or reasonable, it is human.
Hamilton has put pen to paper on a bumper new contract.
Former teammate Nico Rosberg stunned the team in 2016 when he won the title and then announced his retirement only days later.
Wolff added: "We are very pleased to extend Valtteri's contract with Mercedes for another season at least - and to be able to confirm an unchanged driver line-up for 2019, ahead of our home race in Hockenheim".
Both Red Bull and McLaren intimated they had not been in contact with Hamilton, leaving Ferrari, a team he respects and admires, as the only remaining organisation with the financial muscle required. This also means that the relative ease with which Hamilton-Mercedes won races and challenged for championships may no longer last till 2020.
Like Vettel, he is bidding to become the third driver in F1 history to win five titles, joining seven-time champion Michael Schumacher and five-time champion Juan Manuel Fangio in that revered company.
And Vettel himself advised Ferrari and Charles Leclerc not to "rush" into a deal.
Vettel was fourth fastest in final practice but just 0.225s off pacesetter Max Verstappen with the two Mercedes drivers splitting the Ferrari and the Red Bull. The 2005/2006 World Champion wants and deserves a drive in a title-winning vehicle but a seat is not going to become available for him amongst the "big three" and the Spaniard deciding to draw his 17 year F1 career to a close at the end of 2018 looks inevitable. The biggest piece of the puzzle would still be Ferrari's decision to renew Kimi Raikkonen's services or not.