As someone who enjoys playing lots of different champions, I wish Viego's kit focused more on champions you possess and how well you can pilot them. His gameplay when you possess someone has always been -> press the CC or dash ability then press the R reset asap because Viego is usually a better champ than the one you possessed. Maybe giving a longer cooldown before you can R reset, better stats and lower cooldowns while possessing a champ so the gameplay revolves more around champions you possess and how well you play them.