Tahm Kench Mid?
I currently can't test the idea (no mouse available), but I believe it could potentially be an effective strategy. Once he has his level 6, he can roam highly effectively and set up great ganks. Given the fact that his ult carries 2, you could also drag along your jungler for ganks that are stronger than TF's. I believe that
would be a good rush as it gives tahm the wave clear he needs to compete with other midlaners.