A new type isn't going to happen, sorry. The new typings and whatever have been rumored since gen 3 and it has never happened then so why now?
On the flip-side, I would love new abilities. Why not an ability/move that would slightly boost speed by like .10%? It may seem unbalanced at first but it would bring the metagame to a whole new level and it would make so many otherwise decent Pokemon (Chandelure) a whole lot better and a ton of other Pokemon as well. More viable Pokemon generally means a more balanced metagame, since things aren't just stagnant as hell. I also hope they nerf previously broken abilities like Sand Rush and Swift Swim (make it +1 speed instead of +2) or Sand Veil and Snow Cloak (+10 evasion instead of +20) but I might've told you that before.