I don't know how much of an issue Martini would be. They have done many reissues of G1 Jazz over the years with "Meister" branding which still uses the Martini colours. Still we should keep in mind that G1 Jazz is unlicensed by Porsche.

Williams get away with having Martini as a sponsor in Muslim nations, France and video games by changing the colours of from white, orange and blue to white, blue and light blue so that would probably be the biggest issue if there had to be a change.

It frustrates me as a fan of Porsche that they are so behind the times with their licencing. The various other Volkswagen brands are up with the times. Lamborghini will licence practically anything. Bugatti loves the attention they get from licencing out their stuff. Bentley would still be seen as a brand for old people if it wasn't their licencing and Audi even let an R8 get cut in two by Bay in ROTF.

Porsche's marketing team was even stupid enough to paint the #92 Porsche 911 RSR in a Rothmans livery for this years Le Mans 24 hours. By the end of the race people were pretty outraged at the blatant tobacco advertising and the commentators had dance around the Rothmans livery.

It pains me to say it but Porsche are just stupid.