Or! Heavy retool Legacy Motormaster into Thunder Clash, with the Turbomasters Boss, Hurrican, Flash and Scorch retooled/reshelled from the other Stunticons. When combined form Hyperdrive?
I mean I'll take them for existing at all. It's a good way to get all five ground vehicles (meanwhile, poor Rotorstorm's combining joke still haunts him) out in one fell swoop.
But I kinda want to hold out for slightly closer takes that don't combine; I don't think that any of the Stunticon molds really lend themselves well to the Turbomaster cars.
I guess the Hyperdrive idea I mentioned does wastefully handwave away the combining. I Initially thought of Motormaster because of the cab feet, and the similar enough robot chests.