I love Varus, he's one of the few ADCS I play (I'm a support/mage main). The new Essence Reaver makes him a lot better than he used to be - before his CDR and mana usage made it so he couldn't be used as he was "supposed" to, but now he can be. I like that you don't need to rush IE on him anymore either due to all the other options that work better for him. SO he's better than he was before, but still I think he needs to be a bit more viable since right now he's a bit situational. In some scenarios he can be amazing (I recently stole dragon and got a kill at the same time with his Q the last game I played him) but other times he can be not effective at all.
Still, I was hoping he'd get a better rework on his skills. His Q is awesome and his ult has amazing utility, but all his other skills and his passive are just meh. I think his w should be an actual skill, and either have its effect as the skills passive, or replace his actual passive with it. Honestly the main reason I play him is because I like his character and aesthetic moreso than the gameplay of him.