Ryback vs Rusev will be awesome

Remember the days when there was a feud between Ryback & Rusev & it used to feel so awesome because these two great superstars were pulling it off as an amazing storyline & the WWE Universe was thrilled with it but why didn't they continue the feud after Ryback was fired.

I think after this Rusev vs Cena storyline, WWE should focus on this amazing storyline involving these great superstars.