first of all there isn't the "original 251" It's 151. Second, I actually think some of the best designs came after, but also some of the worst. Least favorite: Vanilluxe line (I choose you, ICE CREAM!) Trubbish/Garbador (Garbador is just no) Throh/Sawk (Why the hell are they wearing clothes) Wormadam (...) Nosepass/Probopass (I can draw a rock and put a nose on it too, and be super weak to a ton of stuff) Kricketune (I just don't like him for some reason)
Quagsire - Incredibly annoying to beat online without a Grass Type move. The thing walls me. I'd hate to use this thing... Ever.
Dialga - Uber. I'd actually enjoy using this in-game and competitively though.
Arceus - If you don't know what Arceus is, there is either something wrong with you, or you've never heard of Pokemon. I actually wish I had an Arceus for in-game wasting (I wanna see if he can sweep healing-less Challenge Mode Elite Four as easily as Mewtwo can)
Pikachu - Sucks. Outclassed by countless other Electric-types like Jolteon, Electivire, and especially Rotom. Like Quagsire, I will never use it. Ever.
Lapras - Again, sucks. Again, outclassed by countless things. Namely Gyarados. Again, will never use it.
Audino - Sucks. Blah blah blah. Outclassed. Blah blah blah. Will never use it.
"Definition: 'Love' is making a shot to the knees of a target 120 kilometers away using an Aratech sniper rifle with a tri-light scope." -HK-47