Man so many to choose from. But I do have an inkling to try a Barbarian/Fighter hybrid. One question this leads to though, is if other sources are allowed for character creation? Specifically the Elemental Evil Player's Companion from WotC (I can provide a link later if need be). They added the Genasi, Deep Gnome and Goliath races, and I had a rather fun Goliath barbarian in 4E that I'd like to bring into 5E and see how he plays out.
Hard to choose though, when I've had such a lengthy arsenal of favorite characters over the years. If the Goliath doesn't pan out, I've also got a Ranger on deck I'd like to give a shot.