If they can get him off of bottom tier hell, that is. Besides, Rock started off as the giant axe guy until Astaroth came along and became more popular.People really need to stop treating as if Rock cannot return in a meaningful manner, he just simply needs new moves to move him away from sharing moves with Astraroth. He already has a giant mace instead of an axe which is a good platform for his own unique moves plus new types of grapples with different properties. Also for the lore side he will still have those old moves he shares with Astaroth he just wouldn't be using them at that time.
As an indicator, he ranked 31 out of 45 on the Character Popularity Poll. Astaroth, on the other hand, ended 25th.