I've got high hopes for the 5th season. I know that several people (myself included) want to see a proper ending to the Snake Pit arc.
But your mentioning the possibility of the Bey Club returning raises a few questions. Will they bring back characters like Daigo, Wakiya and Ken (I really want to see Zac again since he didn't even appear at all in Turbo)? There's also the matter of who will voice the characters when the dub rolls around (Will they stick with Bang! Zoom Entertainment or switch back to Ocean/Blue Water) especially since Ken's English VA died back in July.