There will be cars on offer from BR and Ginetta. Not sure if the BR cars will be customer cars or possibly semi customer cars e.g. SMP.. Ginetta have been signing up a few teams
Manor being one.
Can't see Rebellion going back to LMP1 to be honest.
I do think that Peugeot or another manufacturer will be back and possibly another customer car option... Maybe French?
I guess it depends on the regulations, specifically engine options.
Some teams/organisations always seem to be able to find enough money to compete, year on year.. Maybe a Krohn car or a Dempsey entry? That could be interesting!