The difference with Kudus is that he is still fairly young (only just turned 25) and clearly has always had the physique and skill, but his end product hasn't been great hence his fairly poor goals/assists return. But is now at that age where you find that a lot of talented players end product improves.
Paqueta is 28, he isn't going to get much better or change his habits at this stage. He is a highlights reel player, and having many West Ham friends have watched a lot of their games and there are a few things you can guarantee about him - he will do a lovely piece of skill at some point, give away the ball at some point, and do a stupid challenge at some point. He is not the answer IMO....