Like Im'DLytFull said, answers to this are going to be opinionated. Personally, I don't think a toy being waterproof is any better than a non-waterproof toy other than it being safer to clean with water. I like laying down when playing with my toys so I opt for laying on my bed rather than standing up in my shower and I don't have a tub. And I've heard some waterproof toys can still go a bit wonky after being used with water so I'm not entirely sold on the 'waterproof' idea anyway.
To each his/her own I suppose.
But I still want to get the Wild G, waterproof or not.