When I read that article I wondered, if Vettel ever did want to be like Schumacher and go to a former great team and help build them up where would he go?
Of the big name teams in F1 Ferrari and McLaren have had championships in the past decade and are currently still top teams so they wouldn’t really meet the criteria of building a team up.
I think the obvious choices would be Mercedes or Williams.
Williams would fit the bill in terms of a former great team who have not won a championship for too long, but don’t think all the other resources needed would be in place to take them back to the top.
Although the Mercedes team won the championships when they were Brawn they haven’t looked like winning since then. They are often called the German national team and if Schumacher doesn’t manage to get them winning races before he retires for good perhaps the temptation will be enough if Vettel wants a new challenge when his current Red Bull contract finishes. As a works team they should also have the same resources as other top teams.
However if Red Bull remain competitive I wouldn’t be surprised if Vettel stays with them for a lot longer than his current deal. He came through their young driver program and you could say Vettel’s ties to Red Bull are similar to Hamilton’s with McLaren, and there has been discussions on this forum before about the likelihood of Hamilton staying at McLaren for the rest of his career.