This episode was really interesting imo, and I actually really loved Goomy in this episode. It's just so ridiculously adorable as it stands, Goomy was really really adorable! It seemed to get along quite well with Ash, and I found it really cute how it nibbled people's ears or such when they were right about what was on Goomy's mind. Goomy I guess isn't so much weak but rather very fearful from what I'm seeing and it's extremely shaken by Dedenne and the Ariados, and it appears to be very easily exhausted and dehydrated causing it to become really weak. I love how Ash caught it and I'd love to see more out of Goomy, it's quite the cutie (you know, long before this episode was even known of, I had a feeling Ash would catch a Goomy, lol!).
Now the only problem is...when this thing does become a Goodra, I'm kind of worried, because a pseudo-legendary in the anime seems...you know...overpowered. (Dragonite, Tyranitar, Salamence, Metagross, Garchomp, and Hydreigon have all been depicted in the anime as extremely powerful and able to dominate most matches). At the very least though, we might see a lot of Goodra hugging Ash and friends when that does come, and that will be amusing to see! And I like Goodra a lot so yeah.