The concept for "Go West Young Scoob" is absolutely fantastic, one of the best and most inventive concepts of 'What's New Scooby Doo'. It was a different setting and the episode also felt different without being too much so. There is always the worry though about how fantastic concepts would be executed well, having seen recently some wastes of potential while thinking to myself that the execution would have to be really bad to screw up an idea as good as this.
"Go West Young Scoob" luckily is one of the examples of a great and more concept more than lived up to in equally good execution. While liking it on first viewing, this is one of the episodes that is likely to be more enjoyed through older eyes. Which was from my personal experience. The mystery is a lot more entertaining than the basic synopsis sounds, or at least may sound to some, but even better is how the setting is used, the way the material is written and how things are not what they seem.
First and foremost, "Go West Young Scoob" has one of the most imaginative settings of 'What's New Scooby Doo' which is utilised so inventively. Have not seen robots this entertaining or creepy in a Scooby Doo episode since 'Scooby Doo Where are You's' "Foul Play in Funland" and the scenery is full of vibrant colour. The music is rousing and catchy, with a good chase scene and song (though not up there with the favourites). The theme song is one of the franchise's best and have gone from being somewhat ehh on Simple Plan to appreciating their music.
It is an incredibly entertaining episode, the parodying being very witty and very affectionate. Indicating that it was written by someone in love with the genre. The energy is also razor sharp and appropriately rip roaring. Gibby Norton is once again very amusing with some nice dialogue. Shaggy and Scooby's goofiness is as ever charming. The robots are suitably unsettling and inventively used. "Go West Young Scoob" does have some creepiness, though not as much as other episodes.
Mystery wise, "Go West Young Scoob" is solid, though simpler than some of the others. It does stand out for having one of the shows most creative endings, did not see the perpetrator coming. The voice acting is very good to great.
Overall, excellent. 9/10.