Riven needs a buff

Her R feels so clunky and slow, by the time her ulti hits the enemy has either moved, stunned you or you die before the ulti hits (the animation hits but no dmg applied cause of the missle speed being nerfed to hard) but most situations when I win against someone in a duel its mostly without the ulti or I ulti only when the enemy is stunned in a combo. Edit: My fault for not being clear enough this is one solution to bring her back without being to OP, what other solutions would you guys think of?
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