Okay, let's look at this:
If there is no Magikarp, there is no Gyarados... and Gyarados pwns. :/
If there is no Zubat, there is no Crobat... which is fast, disruptive, powerful and versatile.
If there is no Magnezone, Magneton's just bad.
No Arceus = No Plates, and no Broken.
=] All Pokemon are created by Nintendo and his workers for a reason. You see, even a Magikarp can win due to Swift Swim and Flail. Unown is for the 3rd Movie, no Unown, no Entei in 3rd Movie. :/ No Bidoof means no Bibarel, meaning no HM Slave. :/