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.