I’ve come up with novel ways to combine elements of both genres in my game thus far. For example, like any good platformer there’s plenty of collectibles lying around (id est coins in Mario, rings in Sonic). There’s also RTS-style resource gathering, where you must have enough resources in order to build/purchase a new unit (id est gold in WarCraft, et cetera).
In fact, both of these things are one and the same! The collectibles are the resources. 😀