Ok..
I just want to throw in one disagreement here...
People shouldn't be so quick to harsh on Pokemon Ranch. It
appears as if the game could be considered the next Pokemon Box. For those that don't know, Pokemon Box was a popular GameCube release (among hard core Pokemon fans) because it was a way of managing monsters in one place. This is a huge deal for those fans that play multiple Pokemon games. Box had no fancy visuals at all. It was basically exactly the same as the storage features from within the portable games.
So, with that frame of mind, I think it's obvious that Nintendo wanted to try out a retro feel in order to give what is essentially a storage game a bit more charm. So yeah, don't judge it on the looks, judge it on whether or not you have any use for a Pokemon storage helper (which I'm sure most of you don't =P )
Edit: Ok, I just got to the point that Jonny brought up Box, so nevermind.