Will the questions over whether F1 engine customers have access to the same performance levels as works team finally go away in 2018? That is certainly the FIA's intent, and its push for parity for customer teams can only be good for the championship.
But who was lobbying for this new focus on parity? And which of the six customer teams - in other words everyone except Mercedes, Ferrari, Renault and sole Honda partner Toro Rosso - stands to gain?
On January 28, F1 teams were surprised by the arrival of FIA technical directive TD/005-18. Such documents are often routine regulation housekeeping, but this one captured everyone's attention, as it had not been expected.