I'm also considering keeping the BRZ and getting the Tesla model III, the model that's coming out in 2017 that will start at $35k and supposedly compete with the BMW 3 series. It may be too practical for me though being it's a 4 door sedan car. If they make it in a 2 door then perhaps.
I've also considered buying another Lotus Elise, but the prices are high since it's summer so perhaps I'll look around again in the winter.