I waffle back and forth on what would be good to do with Toon Lagoon. I mean, it would be cool to see it remain about cartoons but you know, more relevant ones(which I suppose Pokemon is also a longtime cartoon show, weird how that works huh?). Plus I find the water rides fine as they are, it's just the surrounding area that could use a major upgrade.
And then there's the more greedy side of me that just flat out would rather see them giving updates to Marvel(Avengers Tower!), Suess(Mt. Crumpit!), Potter(Forbidden Forest!), Jurrasic Park(JW Ballz Ride!) over anything Toon Lagoon related.
But then I also wouldn't be too upset to see a fully realized Pokemon or Zelda area take up a portion of Toon Lagoon, because those things are going to be awesome.