I started my experience with my 2013 RT LTD with many heat associated issues, and a poor dealership. Since the recall and Service Bulletins have all been done, the hoses to the throttle body and the purge valve have been replaced, it is a different machine. I no longer get the 1st degree burns from the where the seat and tupperware meet. I've installed some farkles that have improved the experience, dramatically. Am I concerned about the rubber and plastic parts that are still under the Tupperware, and were exposed to that heat? Yes. Does it stop me from riding? Not a chance.
The NHTSA investigation in process will either discover serious issues and require they be resolved . . . or determine the fire danger is over.
Knowing what I know, now, if I was in the market, yes, I'd buy a 2013 RT, providing all recall and service/warranty bulletins are done before it ever rolls out of the dealership and it was heavily discounted. Then, I'd use some of the savings to do what BikerDoc discussed, adding all the great-to-have farkles, starting with the cat delete, Baja Ron Sway Bar, Elka shocks, BumpSkid, and highway pegs . . . and, perhaps, an awesome custom designed seat . . . and still be money ahead.